开发板硬件介绍 ================  芯驿电子科技（上海）有限公司 基于XILINX ZYNQ7000开发平台的开发板（型号：AX7Z035）2019款正式发布了正式发布了，为了让您对此开发平台可以快速了解，我们编写了此用户手册。 这款ZYNQ7000 FPGA开发平台采用核心板加扩展板的模式，方便用户对核心板的二次开发利用。核心板使用XILINX的Zynq7000 SOC芯片XC7Z035的解决方案，它采用ARM+FPGA SOC技术将双核ARM Cortex-A9 和FPGA 可编程逻辑集成在一颗芯片上。另外核心板上含有4片共2GB高速DDR3 SDRAM芯片，1片8GB的eMMC存储芯片和1片256Mb的QSPI FLASH芯片。 在底板设计上我们为用户扩展了丰富的外围接口，比如1个PCIex4 接口、4路光纤接口、2路千兆以太网接口、4路USB2.0 HOST接口、1路HDMI输出接口、1路HDMI输入接口、1路UART串口接口、1路SD卡接口、1个40针扩展接口等等。满足用户各种高速数据交换，数据存储，视频传输处理以及工业控制的要求，是一款"专业级“的ZYNQ开发平台。为高速数据传输和交换，数据处理的前期验证和后期应用提供了可能。相信这样的一款产品非常适合从事ZYNQ开发的学生、工程师等群体。 .. image:: images/03_media/image1.png 开发板简介 ---------- 在这里，对这款AX7Z035 ZYNQ开发平台进行简单的功能介绍。 开发板的整个结构，继承了我们一贯的核心板+扩展板的模式来设计的。核心板和扩展板之间使用高速板间连接器连接。 核心板主要由ZYNQ7035 + 4个DDR3 + eMMC + QSPI FLASH的最小系统构成。ZYNQ7035采用Xilinx公司的Zynq7000系列的芯片，型号为XC7Z035-2FFG676。ZYNQ7035芯片可分成处理器系统部分Processor System（PS）和可编程逻辑部分Programmable Logic（PL）。在ZYNQ7035芯片的PS端和PL端分别挂了2片DDR3，每片DDR3容量高达512M字节，使得ARM系统和FPGA系统能独立处理和存储的数据的功能。PS端的8GB eMMC FLASH存储芯片和512Mb的QSPI FLASH用来静态存储ZYNQ的操作系统、文件系统及用户数据。 底板为核心板扩展了丰富的外围接口，其中包含1个PCIex4接口、4路光纤接口、2路千兆以太网接口（PS和PL各一路）、4路USB2.0 HOST接口、1路HDMI输出接口、1路HDMI输出接口、1路UART串口接口、1路SD卡接口、1个40针扩展接口和一些按键LED。 下图为整个开发系统的结构示意图： .. image:: images/03_media/image2.png 通过这个示意图，我们可以看到，我们这个开发平台所能含有的接口和功能。 -  ZYNQ7035核心板 由XC7Z035+2GB DDR3+8GB eMMC FLASH + 512Mb QSPI FLASH组成，另外有三个晶振提供时钟，一个单端33.3333MHz晶振提供给PS系统，一个差分200MHz晶振提供给PL逻辑DDR参考时钟，另外一个差分125MHz晶振提供给GTX收发器参考时钟。 - PCIe x4接口 支持PCI Express 2.0标准，提供标准的PCIe x4高速数据传输接口，单通道通信速率可高达5GBaud。 - 4路SFP光纤接口 ZYNQ的GTX收发器的4路高速收发器连接到4个光模块的发送和接收，实现4路高速的光纤通信接口。每路的光纤数据通信接收和发送的速度高达10Gb/s。 - 千兆以太网接口 2路10/100M/1000M以太网RJ45接口，用于和电脑或其它网络设备进行以太网数据交换。网络接口芯片采用Micrel公司的KSZ9031工业级GPHY芯片，1路以太网连接到ZYNQ芯片的PS端，1路以太网连接到ZYNQ芯片的PL端。 - HDMI视频输出 1路HDMI视频输出接口，我们选用了ANALOG DEVICE公司的ADV7511 HDMI编码芯片，最高支持1080P@60Hz输出，支持3D输出。 - HDMI视频输入 1路HDMI视频输入接口，我们选用了Silion Image公司的SIL9011/SIL9013 HDMI解码芯片，最高支持1080P@60Hz输入，支持不同格式的数据输入。 - USB2.0 HOST接口 通过USB Hub芯片扩展4路USB HOST接口，用于连接外部的USB从设备，比如连接鼠标，键盘，U盘等等。USB接口采用扁型USB接口(USB Type A)。 - USB Uart接口 1路Uart转USB接口，用于和电脑通信，方便用户调试。串口芯片采用Silicon Labs CP2102GM的USB-UAR芯片, USB接口采用MINI USB接口。 - Micro SD卡座 1路Micro SD卡座，用于存储操作系统镜像和文件系统。 - 40针扩展口 1个40针2.54mm间距的扩展口，可以外接黑金的各种模块（双目摄像头，TFT LCD屏，高速AD模块等等）。扩展口包含5V电源1路，3.3V电源2路，地3路，IO口34路。 - JTAG调试口 1个10针2.54mm标准的JTAG口，用于FPGA程序的下载和调试，用户可以通过XILINX下载器对ZYNQ系统进行调试和下载。 - LED灯 10个发光二极管LED, 核心板上3个，底板上7个。核心板上1个电源指示灯；1个DONE配置指示灯；1个用户指示灯。底板上有1个电源指示灯，4个用户指示灯和2个串口指示灯。 - 按键 5个按键，1个复位按键， 4个PL用户按键。 AC7Z035核心板 ------------- 简介 ~~~~ AC7Z035(**核心板型号，下同**)核心板，ZYNQ芯片是基于XILINX公司的ZYNQ7000系列的XC7Z035-2FFG676。ZYNQ芯片的PS系统集成了两个ARM Cortex™-A9处理器，AMBA®互连，内部存储器，外部存储器接口和外设。ZYNQ芯片的FPGA内部含有丰富的可编程逻辑单元，DSP和内部RAM。 这款核心板使用了4片Micron的512MB的DDR3芯片MT41J256M16HA-125,总的容量达2GB。其中PS和PL端各挂载两片，分别组成32bit的总线宽度。PS端的DDR3 SDRAM的最高运行速度可达533MHz(数据速率1066Mbps)，PL端的DDR3 SDRAM的最高运行速度可达800MHz(数据速率1600Mbps)。另外核心板上也集成了2片256MBit大小的QSPI FLASH和8GB大小的eMMC FLASH芯片，用于启动存储配置和系统文件。 为了和底板连接，这款核心板的4个板对板连接器扩展出了PS端的USB接口，千兆以太网接口，SD卡接口及其它剩余的MIO口；也扩展出了ZYNQ的8对高速收发器GTX接口；以及PL端的几乎所有IO口（144个），其中BANK12和BANK13的IO的电平可以通过更换核心板上的LDO芯片来修改，满足用户不用电平接口的要求。对于需要大量IO的用户，此核心板将是不错的选择。而且IO连接部分，ZYNQ芯片到接口之间走线做了等长和差分处理，并且核心板尺寸仅为80*60（mm），对于二次开发来说，非常适合。 .. image:: images/03_media/image3.png AC7Z035核心板正面图 .. image:: images/03_media/image4.png AC7Z035核心板背面图 ZYNQ芯片 ~~~~~~~~ 开发板使用的是Xilinx公司的Zynq7000系列的芯片，型号为XC7Z035-2FFG676。芯片的PS系统集成了两个ARM Cortex™-A9处理器，AMBA®互连，内部存储器，外部存储器接口和外设。这些外设主要包括USB总线接口，以太网接口，SD/SDIO接口，I2C总线接口，CAN总线接口，UART接口，GPIO等。PS可以独立运行并在上电或复位下启动。ZYNQ7000芯片的总体框图如图2-2-1所示 .. image:: images/03_media/image5.png 图2-2-1 ZYNQ7000芯片的总体框图 其中PS系统部分的主要参数如下： - 基于ARM 双核CortexA9 的应用处理器，ARM-v7架构 高达800MHz - 每个CPU 32KB 1级指令和数据缓存，512KB 2级缓存 2个CPU共享 - 片上boot ROM和256KB 片内RAM - 外部存储接口，支持16/32 bit DDR2、DDR3接口 - 两个千兆网卡支持：发散-聚集DMA ，GMII，RGMII，SGMII接口 - 两个USB2.0 OTG接口，每个最多支持12节点 - 两个CAN2.0B总线接口 - 两个SD卡、SDIO、MMC兼容控制器 - 2个SPI，2个UARTs，2个I2C接口 - 54个多功能配置的IO，可以软件配置成普通IO或者外设控制接口 - PS内和PS到PL的高带宽连接 其中PL逻辑部分的主要参数如下： - 逻辑单元Logic Cells：275K； - 查找表LUTs: 171,900 - 触发器(flip-flops):343,800 - 乘法器18x25MACCs：900; - Block RAM：17.6Mb； - 8路高速GTX收发器，支持PCIE Gen2x8； - 2个AD转换器,可以测量片上电压、温度感应和高达17外部差分输入通道，1MBPS XC7Z035-2FFG676I芯片的速度等级为-2，工业级，封装为FGG676，引脚间距为1.0mm，ZYNQ7000系列的具体的芯片型号定义如下图2-2所示。 .. image:: images/03_media/image6.png 图2-2-2 ZYNQ型号命名规则定义 图2-2-3为开发板所用的XC7Z035芯片实物图。 .. image:: images/03_media/image7.png 图2-3 XC7Z035芯片实物 DDR3 DRAM ~~~~~~~~~ AX7Z035开发板上配有四片Micron(美光）的512MB的DDR3芯片,型号为MT41J256M16HA-125(兼容MT41K256M16HA-125)，其中PS和PL端各挂载两片。两片DDR3 SDRAM组成32bit的总线宽度。PS端的DDR3 SDRAM的最高运行速度可达533MHz(数据速率1066Mbps)，两片DDR3存储系统直接连接到了ZYNQ处理系统（PS）的BANK 502的存储器接口上。PL端的DDR3 SDRAM的最高运行速度可达800MHz(数据速率1600Mbps)，两片DDR3存储系统连接到了FPGA的BANK33, BANK34的接口上。DDR3 SDRAM的具体配置如下表2-3-1所示。 表2-3-1 DDR3 SDRAM配置 +--------------+--------------------+------------------+--------------+ | **位号** | **芯片型号** | **容量** | **厂家** | +==============+====================+==================+==============+ | U4,U5,U7,U8 | MT41J256M16HA-125 | 256M x 16bit | Micron | +--------------+--------------------+------------------+--------------+ DDR3的硬件设计需要严格考虑信号完整性，我们在电路设计和PCB设计的时候已经充分考虑了匹配电阻/终端电阻,走线阻抗控制，走线等长控制，　保证DDR3的高速稳定的工作。 PS端的DDR3 DRAM的硬件连接方式如图2-3-1所示: .. image:: images/03_media/image8.png 图2-3-1 PS端DDR3 DRAM原理图部分 PL端的DDR3 DRAM的硬件连接方式如图2-3-2所示: .. image:: images/03_media/image9.png 图2-3-2 PL端DDR3 DRAM原理图部分 **PS端DDR3 DRAM引脚分配：** +-----------------------+----------------------+-----------------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ引脚号** | +=======================+======================+=======================+ | **PS_DDR3_DQS0_P** | PS_DDR_DQS_P0_502 | H24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS0_N** | PS_DDR_DQS_N0_502 | G25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS1_P** | PS_DDR_DQS_P1_502 | L24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS1_N** | PS_DDR_DQS_N1_502 | L25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS2_P** | PS_DDR_DQS_P2_502 | P25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS2_N** | PS_DDR_DQS_N2_502 | R25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS3_P** | PS_DDR_DQS_P3_502 | W24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DQS4_N** | PS_DDR_DQS_N3_502 | W25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D0** | PS_DDR_DQ0_502 | J26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D1** | PS_DDR_DQ1_502 | F25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D2** | PS_DDR_DQ2_502 | J25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D3** | PS_DDR_DQ3_502 | G26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D4** | PS_DDR_DQ4_502 | H26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D5** | PS_DDR_DQ5_502 | H23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D6** | PS_DDR_DQ6_502 | J24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D7** | PS_DDR_DQ7_502 | J23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D8** | PS_DDR_DQ8_502 | K26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D9** | PS_DDR_DQ9_502 | L23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D10** | PS_DDR_DQ10_502 | M26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D11** | PS_DDR_DQ11_502 | K23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D12** | PS_DDR_DQ12_502 | M25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D13** | PS_DDR_DQ13_502 | N24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D14** | PS_DDR_DQ14_502 | M24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D15** | PS_DDR_DQ15_502 | N23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D16** | PS_DDR_DQ16_502 | R26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D17** | PS_DDR_DQ17_502 | P24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D18** | PS_DDR_DQ18_502 | N26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D19** | PS_DDR_DQ19_502 | P23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D20** | PS_DDR_DQ20_502 | T24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D21** | PS_DDR_DQ21_502 | T25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D22** | PS_DDR_DQ22_502 | T23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D23** | PS_DDR_DQ23_502 | R23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D24** | PS_DDR_DQ24_502 | V24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D25** | PS_DDR_DQ25_502 | U26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D26** | PS_DDR_DQ26_502 | U24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D27** | PS_DDR_DQ27_502 | U25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D28** | PS_DDR_DQ28_502 | W26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D29** | PS_DDR_DQ29_502 | Y25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D30** | PS_DDR_DQ30_502 | Y26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_D31** | PS_DDR_DQ31_502 | W23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DM0** | PS_DDR_DM0_502 | G24 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DM1** | PS_DDR_DM1_502 | K25 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DM2** | PS_DDR_DM2_502 | P26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_DM3** | PS_DDR_DM3_502 | V26 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A0** | PS_DDR_A0_502 | K22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A1** | PS_DDR_A1_502 | K20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A2** | PS_DDR_A2_502 | N21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A3** | PS_DDR_A3_502 | L22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A4** | PS_DDR_A4_502 | M20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A5** | PS_DDR_A5_502 | N22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A6** | PS_DDR_A6_502 | L20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A7** | PS_DDR_A7_502 | J21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A8** | PS_DDR_A8_502 | T20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A9** | PS_DDR_A9_502 | U20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A10** | PS_DDR_A10_502 | M22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A11** | PS_DDR_A11_502 | H21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A12** | PS_DDR_A12_502 | P20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A13** | PS_DDR_A13_502 | J20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_A14** | PS_DDR_A14_502 | R20 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_BA0** | PS_DDR_BA0_502 | U22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_BA1** | PS_DDR_BA1_502 | T22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_BA2** | PS_DDR_BA2_502 | R22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_S0** | PS_DDR_CS_B_502 | Y21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_RAS** | PS_DDR_RAS_B_502 | V23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_CAS** | PS_DDR_CAS_B_502 | Y23 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_WE** | PS_DDR_WE_B_502 | V22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_ODT** | PS_DDR_ODT_502 | Y22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_RESET** | PS_DDR_DRST_B_502 | H22 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_CLK0_P** | PS_DDR_CKP_502 | R21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_CLK0_N** | PS_DDR_CKN_502 | P21 | +-----------------------+----------------------+-----------------------+ | **PS_DDR3_CKE** | PS_DDR_CKE_502 | U21 | +-----------------------+----------------------+-----------------------+ **PL端DDR3 DRAM引脚分配：** +-----------------------+-----------------------+---------------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ引脚号** | +=======================+=======================+=====================+ | **PL_DDR3_DQS0_P** | IO_L3P_T0_DQS_33 | G2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS0_N** | IO_L3N_T0_DQS_33 | F2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS1_P** | IO_L9P_T1_DQS_33 | K2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS1_N** | IO_L9N_T1_DQS_33 | K1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS2_P** | IO_L15P_T2_DQS_33 | N3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS2_N** | IO_L15N_T2_DQS_33 | N2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS3_P** | IO_L21P_T3_DQS_33 | M8 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DQS4_N** | IO_L21N_T3_DQS_33 | L8 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D0** | IO_L5N_T0_33 | E1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D1** | IO_L1N_T0_33 | F4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D2** | IO_L4P_T0_33 | D1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D3** | IO_L1P_T0_33 | G4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D4** | IO_L2N_T0_33 | D3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D5** | IO_L5P_T0_33 | E2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D6** | IO_L2P_T0_33 | D4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D7** | IO_L4N_T0_33 | C1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D8** | IO_L7N_T1_33 | H1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D9** | IO_L10N_T1_33 | G1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D10** | IO_L7P_T1_33 | J1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D11** | IO_L8N_T1_33 | H3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D12** | IO_L11N_T1_SRCC_33 | K3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D13** | IO_L8P_T1_33 | H4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D14** | IO_L11P_T1_SRCC_33 | L3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D15** | IO_L10P_T1_33 | H2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D16** | IO_L18P_T2_33 | N1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D17** | IO_L14P_T2_SRCC_33 | L5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D18** | IO_L14N_T2_SRCC_33 | L4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D19** | IO_L13P_T2_MRCC_33 | M6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D20** | IO_L16P_T2_33 | M2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D21** | IO_L17P_T2_33 | N4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D22** | IO_L16N_T2_33 | L2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D23** | IO_L17N_T2_33 | M4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D24** | IO_L23P_T3_33 | N7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D25** | IO_L22N_T3_33 | J6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D26** | IO_L19P_T3_33 | M7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D27** | IO_L20N_T3_33 | J5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D28** | IO_L24P_T3_33 | K8 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D29** | IO_L20P_T3_33 | K5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D30** | IO_L24N_T3_33 | K7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_D31** | IO_L22P_T3_33 | K6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DM0** | IO_L6P_T0_33 | F3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DM1** | IO_L12P_T1_MRCC_33 | J4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DM2** | IO_L13N_T2_MRCC_33 | M5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_DM3** | IO_L23N_T3_33 | N6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A0** | IO_L17N_T2_34 | A8 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A1** | IO_L23P_T3_34 | C2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A2** | IO_L14P_T2_SRCC_34 | D6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A3** | IO_L15N_T2_DQS_34 | B9 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A4** | IO_L10N_T1_34 | D5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A5** | IO_L17P_T2_34 | A9 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A6** | IO_L11N_T1_SRCC_34 | E7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A7** | IO_L15P_T2_DQS_34 | C9 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A8** | IO_L12N_T1_MRCC_34 | F7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A9** | IO_L18N_T2_34 | A7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A10** | IO_L24N_T3_34 | A2 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A11** | IO_L11P_T1_SRCC_34 | F8 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A12** | IO_L23N_T3_34 | B1 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A13** | IO_L16P_T2_34 | B10 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_A14** | IO_L12P_T1_MRCC_34 | G7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_BA0** | IO_L18P_T2_34 | B7 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_BA1** | IO_L19N_T3_VREF_34 | C3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_BA2** | IO_L22N_T3_34 | A3 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_S0** | IO_L14N_T2_SRCC_34 | C6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_RAS** | IO_L19P_T3_34 | C4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_CAS** | IO_L20N_T3_34 | B4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_WE** | IO_L20P_T3_34 | B5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_ODT** | IO_L22P_T3_34 | A4 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_RESET** | IO_L16N_T2_34 | A10 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_CLK0_P** | IO_L21P_T3_DQS_34 | B6 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_CLK0_N** | IO_L21N_T3_DQS_34 | A5 | +-----------------------+-----------------------+---------------------+ | **PL_DDR3_CKE** | IO_L24P_T3_34 | B2 | +-----------------------+-----------------------+---------------------+ QSPI Flash ~~~~~~~~~~ 开发板配有2片256MBit大小的Quad-SPI FLASH芯片组成8位带宽数据总线，FLASH型号为W25Q256FVEI，它使用3.3V CMOS电压标准。由于QSPI FLASH的非易失特性，在使用中， 它可以作为系统的启动设备来存储系统的启动镜像。这些镜像主要包括FPGA的bit文件、ARM的应用程序代码以及其它的用户数据文件。QSPI FLASH的具体型号和相关参数见表2-4-1。 +--------------+--------------------+------------------+--------------+ | **位号** | **芯片类型** | **容量** | **厂家** | +==============+====================+==================+==============+ | U13,U14 | W25Q256FVEI | 256M bit | Winbond | +--------------+--------------------+------------------+--------------+ 表2-4-1 QSPI Flash的型号和参数 QSPI FLASH连接到ZYNQ芯片的PS部分BANK500的GPIO口上，在系统设计中需要配置这些PS端的GPIO口功能为QSPI FLASH接口。为图4-1为QSPI Flash在原理图中的部分。 .. image:: images/03_media/image10.png 图2-4-1 QSPI Flash连接示意图 **配置芯片引脚分配：** +-----------------------------+------------------+---------------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ引脚号** | +=============================+==================+=====================+ | **QSPI0_SCK** | PS_MIO6_500 | F23 | +-----------------------------+------------------+---------------------+ | **QSPI0_CS** | PS_MIO1_500 | D26 | +-----------------------------+------------------+---------------------+ | **QSPI0_D0** | PS_MIO2_500 | E25 | +-----------------------------+------------------+---------------------+ | **QSPI0_D1** | PS_MIO3_500 | D25 | +-----------------------------+------------------+---------------------+ | **QSPI0_D2** | PS_MIO4_500 | F24 | +-----------------------------+------------------+---------------------+ | **QSPI0_D3** | PS_MIO5_500 | C26 | +-----------------------------+------------------+---------------------+ | **QSPI1_SCK** | PS_MIO9_500 | D24 | +-----------------------------+------------------+---------------------+ | **QSPI1_CS** | PS_MIO0_500 | E26 | +-----------------------------+------------------+---------------------+ | **QSPI1_D0** | PS_MIO10_500 | A25 | +-----------------------------+------------------+---------------------+ | **QSPI1_D1** | PS_MIO11_500 | B26 | +-----------------------------+------------------+---------------------+ | **QSPI1_D2** | PS_MIO12_500 | A23 | +-----------------------------+------------------+---------------------+ | **QSPI1_D3** | PS_MIO13_500 | B25 | +-----------------------------+------------------+---------------------+ eMMC Flash ~~~~~~~~~~ 开发板配有一片大容量的8GB大小的eMMC FLASH芯片，型号为THGBMFG6C1LBAIL，它支持JEDEC e-MMC V5.0标准的HS-MMC接口，电平支持1.8V或者3.3V。eMMC FLASH和ZYNQ连接的数据宽度为4bit。由于eMMC FLASH的大容量和非易失特性，在ZYNQ系统使用中，它可以作为系统大容量的存储设备，比如存储ARM的应用程序、系统文件以及其它的用户数据文件。eMMC FLASH的具体型号和相关参数见表2-5-1。 +--------------+--------------------+------------------+--------------+ | **位号** | **芯片类型** | **容量** | **厂家** | +==============+====================+==================+==============+ | U11 | THGBMFG6C1LBAIL | 8G Byte | TOSHIBA | +--------------+--------------------+------------------+--------------+ 表2-5-1 eMMC Flash的型号和参数 eMMC FLASH连接到ZYNQ芯片的PS部分BANK501的GPIO口上，在系统设计中需要配置这些PS端的GPIO口功能为SD接口。为图2-5-1为eMMC Flash在原理图中的部分。 .. image:: images/03_media/image11.png 图2-5-1 eMMC Flash连接示意图 **配置芯片引脚分配：** +-----------------------------+------------------+---------------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ引脚号** | +=============================+==================+=====================+ | **MMC_CCLK** | PS_MIO48_501 | B21 | +-----------------------------+------------------+---------------------+ | **MMC_CMD** | PS_MIO47_501 | B19 | +-----------------------------+------------------+---------------------+ | **MMC_D0** | PS_MIO46_501 | E17 | +-----------------------------+------------------+---------------------+ | **MMC_D1** | PS_MIO49_501 | A18 | +-----------------------------+------------------+---------------------+ | **MMC_D2** | PS_MIO50_501 | B22 | +-----------------------------+------------------+---------------------+ | **MMC_D3** | PS_MIO51_501 | B20 | +-----------------------------+------------------+---------------------+ 时钟配置 ~~~~~~~~ 核心板上分别为PS系统, PL逻辑部分和GTX收发器提供了参考时钟，使PS系统和PL逻辑可以单独工作。时钟电路设计的示意图如下图2-6-1所示： .. image:: images/03_media/image12.png 图 2-6-1 核心板时钟源 **PS系统时钟源** ZYNQ芯片通过开发板上的X4晶振为PS部分提供33.333MHz的时钟输入。时钟的输入连接到ZYNQ芯片的BANK500的PS_CLK_500的管脚上。其原理图如图2-6-2所示： .. image:: images/03_media/image13.png 图2-6-2 PS部分的有源晶振 **时钟引脚分配：** +-----------------------------------+-----------------------------------+ | **信号名称** | **ZYNQ引脚** | +===================================+===================================+ | **PS_CLK** | **B24** | +-----------------------------------+-----------------------------------+ **PL系统时钟源** 板上提供了一个差分200MHz的PL系统时钟源，用于DDR3控制器的参考时钟。晶振输出连接到FPGA BANK34的全局时钟(MRCC)，这个全局时钟可以用来驱动FPGA内的DDR3控制器和用户逻辑电路。该时钟源的原理图如图2-6-4所示 .. image:: images/03_media/image14.png 图 2-6-4 PL系统时钟源 **PL时钟引脚分配：** +-----------------------------------+-----------------------------------+ | **信号名称** | **ZYNQ引脚** | +===================================+===================================+ | **SYS_CLK_P** | C8 | +-----------------------------------+-----------------------------------+ | **SYS_CLK_N** | C7 | +-----------------------------------+-----------------------------------+ **GTX参考时钟** 核心板上为GTX收发器提供了125Mhz的参考时钟。参考时钟连接到BANK111的参考时钟输入REFCLK1P/REFCLK1N。该时钟源的原理图如图2-6-6所示 .. image:: images/03_media/image15.png 图 2-6-6 GTX时钟源 图6-7为可GTX时钟源的实物图 .. image:: images/03_media/image16.png 图2-6-7 可编程时钟源实物图 **GTX时钟源ZYNQ引脚分配：** +-----------------------------------+-----------------------------------+ | **信号名称** | **ZYNQ引脚** | +===================================+===================================+ | **BANK111_CLK1_P** | AA6 | +-----------------------------------+-----------------------------------+ | **BANK111_CLK1_N** | AA5 | +-----------------------------------+-----------------------------------+ LED灯 ~~~~~ AC7Z035核心板上有3个红色LED灯，其中1个是电源指示灯(PWR)，1个是配置LED灯(DONE)，1个是用户LED灯。当核心板供电后，电源指示灯会亮起；当FPGA 配置程序后，配置LED灯会亮起。用户LED灯一个连接到PL的IO上, 用户可以通过程序来控制亮和灭，当连接用户LED灯的IO电压为高时，用户LED灯熄灭，当连接IO电压为低时，用户LED会被点亮。LED灯硬件连接的示意图如图2-7-1所示： .. image:: images/03_media/image17.png 图2-7-1 核心板LED灯硬件连接示意图 **用户LED灯的引脚分配** +--------------+------------------+----------------+--------------------+ | **LED灯** |**ZYNQ引脚名** | **ZYNQ管脚号** | **备注** | +==============+==================+================+====================+ | D14 | B13_IO25 | V19 | 用户LED灯 | +--------------+------------------+----------------+--------------------+ 复位电路 ~~~~~~~~ AC7Z035核心板上有一个复位电路，复位输入信号连接到底板的复位按键，复位输出连接到ZYNQ芯片PS复位管脚上，用户可以使用这个底板按键来复位ZYNQ系统。复位连接的示意图如图2-8-1所示： .. image:: images/03_media/image18.png 图2-8-1 复位连接示意图 **复位按键的ZYNQ管脚分配** +--------------+------------------+----------------+--------------------+ | **复位** |**ZYNQ引脚名** | **ZYNQ管脚号** | **备注** | +==============+==================+================+====================+ | PS_POR_B | PS_POR_B_500 | C23 | ZYNQ系统复位信号 | +--------------+------------------+----------------+--------------------+ 电源 ~~~~ AC7Z035核心板供电电压为DC5V，通过连接底板供电。板上的电源设计示意图如下图2-9-1所示: .. image:: images/03_media/image19.png 图2-9-1原理图中电源接口部分 +5V通过DCDC电源芯片EM2130L01QI产生+1.0V的ZYNQ核心电源，EM2130输出电流高达20A，远远满足ZYNQ的核心电压的电流需求。+5V电源再通过DCDC芯片TPS82084和TPS82085来产生+1.5V，+3.3V，MGT_1.5V和+1.5V四路电源。MGT_1.5V电源通过2个LDO芯片TPS74401产生GTX所需的+1.0V和+1.2V的电源，+3.3V通过一个LDO芯片SPX3819-1-8产生GTX的辅助电源+1.8V。PS部分和PL部分的DDR3的VTT和VREF电压由U6，U9来产生。另外通过2路SPX3819M5-3-3产生BANK12和BANK13的IO电源，用户可以通过更换LDO芯片，使得这两个BANK的IO输入输出为其它的电压标准。 各个电源分配的功能如下表所示： +----------------------+-----------------------------------------------+ | **电源** | **功能** | +======================+===============================================+ | +1.0V | ZYNQ PS和PL部分的内核电压 | +----------------------+-----------------------------------------------+ | +1.8V | ZYNQ | | | PS和PL部分辅助电压，BANK501，BANK35，eMMC | +----------------------+-----------------------------------------------+ | +3.3V | ZYNQ Bank0,Bank500，QSIP FLASH, Clock晶振 | +----------------------+-----------------------------------------------+ | +1.5V | DDR3, ZYNQ Bank501, Bank33,Bank34 | +----------------------+-----------------------------------------------+ | VCCIO12 | ZYNQ Bank12 | +----------------------+-----------------------------------------------+ | VCCIO13 | ZYNQ Bank13 | +----------------------+-----------------------------------------------+ | VREF, VTT（+0.75V） | PS DDR3，PL DDR3 | +----------------------+-----------------------------------------------+ | MGTAVCC(+1.0V) | ZYNQ Bank111, Bank112 | +----------------------+-----------------------------------------------+ | MGTAVTT(+1.2V) | ZYNQ Bank111, Bank112 | +----------------------+-----------------------------------------------+ | MGTVCCAUX（+1.8V） | ZYNQ Bank111, Bank112 | +----------------------+-----------------------------------------------+ 因为ZYNQ FPGA的电源有上电顺序的要求，在电路设计中，我们已经按照 芯片的电源要求设计，上电依次为+1.0V->+1.8V->（+1.5 V、+3.3V、VCCIO12，VCCIO13）的电路设计，保证芯片的正常工作。 AC7Z035核心板的电源电路在板上的分别实物图所下图2-9-2所示。 .. image:: images/03_media/image20.png 2-9-2核心板电源部分实物图 结构图 ~~~~~~ .. image:: images/03_media/image21.png 正面图（Top View） 连接器管脚定义 ~~~~~~~~~~~~~~ 核心板一共扩展出4个高速扩展口，使用4个120Pin的板间连接器（J29~J32）和底板连接，连接器使用松下的AXK5A2137YG，对应底板的连接器型号为AXK6A2337YG。其中J29连接BANK12,BANK13的IO，J30连接GTX的收发器信号, J31连接JTAG和BANK35的IO（1.8V电平标准），J 32连接PS的MIO，BANK13的IO和+5V电源。 **J29连接器的引脚分配** +---------+-----------+---------+----------+-------------+----------+ | J29管脚 | 信号名称 | ZYNQ | J29管脚 | 信号名称 | ZYNQ | | | | 引脚号 | | | 引脚号 | +=========+===========+=========+==========+=============+==========+ | 1 | B13_L8_P | AE23 | 2 | B13_L9_N | AB22 | +---------+-----------+---------+----------+-------------+----------+ | 3 | B13_L8_N | AF23 | 4 | B13_L9_P | AB21 | +---------+-----------+---------+----------+-------------+----------+ | 5 | GND | - | 6 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 7 | B13_L10_N | AA23 | 8 | B13_L13_N | AD21 | +---------+-----------+---------+----------+-------------+----------+ | 9 | B13_L10_P | AA22 | 10 | B13_L13_P | AD20 | +---------+-----------+---------+----------+-------------+----------+ | 11 | GND | - | 12 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 13 | B13_L15_N | AF20 | 14 | B13_L14_N | AC22 | +---------+-----------+---------+----------+-------------+----------+ | 15 | B13_L15_P | AF19 | 16 | B13_L14_P | AC21 | +---------+-----------+---------+----------+-------------+----------+ | 17 | GND | - | 18 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 19 | B13_L23_N | W19 | 20 | B13_L7_P | AE22 | +---------+-----------+---------+----------+-------------+----------+ | 21 | B13_L23_P | W18 | 22 | B13_L7_N | AF22 | +---------+-----------+---------+----------+-------------+----------+ | 23 | GND | - | 24 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 25 | B13_L22_P | AA19 | 26 | B13_L20_P | AA20 | +---------+-----------+---------+----------+-------------+----------+ | 27 | B13_L22_N | AB19 | 28 | B13_L20_N | AB20 | +---------+-----------+---------+----------+-------------+----------+ | 29 | GND | - | 30 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 31 | B13_L17_N | AD19 | 32 | B13_L18_N | AF18 | +---------+-----------+---------+----------+-------------+----------+ | 33 | B13_L17_P | AD18 | 34 | B13_L18_P | AE18 | +---------+-----------+---------+----------+-------------+----------+ | 35 | GND | - | 36 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 37 | B13_L19_N | Y20 | 38 | B13_L16_N | AE21 | +---------+-----------+---------+----------+-------------+----------+ | 39 | B13_L19_P | W20 | 40 | B13_L16_P | AE20 | +---------+-----------+---------+----------+-------------+----------+ | 41 | GND | - | 42 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 43 | B13_L24_N | AA18 | 44 | B13_L21_N | AC19 | +---------+-----------+---------+----------+-------------+----------+ | 45 | B13_L24_P | Y18 | 46 | B13_L21_P | AC18 | +---------+-----------+---------+----------+-------------+----------+ | 47 | GND | - | 48 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 49 | B12_L23_P | Y16 | 50 | B12_L18_N | AF17 | +---------+-----------+---------+----------+-------------+----------+ | 51 | B12_L23_N | Y15 | 52 | B12_L18_P | AE17 | +---------+-----------+---------+----------+-------------+----------+ | 53 | GND | - | 54 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 55 | B12_L15_P | AD16 | 56 | B12_L16_P | AF15 | +---------+-----------+---------+----------+-------------+----------+ | 57 | B12_L15_N | AD15 | 58 | B12_L16_N | AF14 | +---------+-----------+---------+----------+-------------+----------+ | 59 | GND | - | 60 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 61 | B12_L14_P | AB15 | 62 | B12_L13_N | AD14 | +---------+-----------+---------+----------+-------------+----------+ | 63 | B12_L14_N | AB14 | 64 | B12_L13_P | AC14 | +---------+-----------+---------+----------+-------------+----------+ | 65 | GND | - | 66 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 67 | B12_L10_N | AF13 | 68 | B12_L19_P | Y17 | +---------+-----------+---------+----------+-------------+----------+ | 69 | B12_L10_P | AE13 | 70 | B12_L19_N | AA17 | +---------+-----------+---------+----------+-------------+----------+ | 71 | GND | - | 72 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 73 | B12_L4_P | AB11 | 74 | B12_L20_P | AB17 | +---------+-----------+---------+----------+-------------+----------+ | 75 | B12_L4_N | AB10 | 76 | B12_L20_N | AB16 | +---------+-----------+---------+----------+-------------+----------+ | 77 | GND | - | 78 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 79 | B12_L7_P | AE10 | 80 | B12_L8_N | AF12 | +---------+-----------+---------+----------+-------------+----------+ | 81 | B12_L7_N | AD10 | 82 | B12_L8_P | AE12 | +---------+-----------+---------+----------+-------------+----------+ | 83 | GND | - | 84 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 85 | B12_L24_P | W16 | 86 | B12_L21_P | AC17 | +---------+-----------+---------+----------+-------------+----------+ | 87 | B12_L24_N | W15 | 88 | B12_L21_N | AC16 | +---------+-----------+---------+----------+-------------+----------+ | 89 | GND | - | 90 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 91 | B12_L3_N | AA10 | 92 | B12_L17_P | AE16 | +---------+-----------+---------+----------+-------------+----------+ | 93 | B12_L3_P | Y10 | 94 | B12_L17_N | AE15 | +---------+-----------+---------+----------+-------------+----------+ | 95 | GND | - | 96 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 97 | B12_L11_P | AC12 | 98 | B12_L22_P | AA15 | +---------+-----------+---------+----------+-------------+----------+ | 99 | B12_L11_N | AD11 | 100 | B12_L22_N | AA14 | +---------+-----------+---------+----------+-------------+----------+ | 101 | GND | - | 102 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 103 | B12_L12_N | AD13 | 104 | B12_L5_P | W13 | +---------+-----------+---------+----------+-------------+----------+ | 105 | B12_L12_P | AC13 | 106 | B12_L5_N | Y13 | +---------+-----------+---------+----------+-------------+----------+ | 107 | GND | - | 108 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 109 | B12_L6_P | AA13 | 110 | B12_L9_P | AE11 | +---------+-----------+---------+----------+-------------+----------+ | 111 | B12_L6_N | AA12 | 112 | B12_L9_N | AF10 | +---------+-----------+---------+----------+-------------+----------+ | 113 | GND | - | 114 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 115 | B12_L1_P | Y12 | 116 | B12_L2_P | AB12 | +---------+-----------+---------+----------+-------------+----------+ | 117 | B12_L1_N | Y11 | 118 | B12_L2_N | AC11 | +---------+-----------+---------+----------+-------------+----------+ | 119 | GND | - | 120 | GND | - | +---------+-----------+---------+----------+-------------+----------+ **J30连接器的引脚分配** +-------+----------------+-------+-------+----------------+---------+ | **J30 | **信号名称** | **ZYN | **J30 | **信号名称** | **ZYNQ | | 管脚**| | Q引脚 | 管脚**| | 引脚号**| | | | 号** | | | | +=======+================+=======+=======+================+=========+ | 1 | | | 2 | | | +-------+----------------+-------+-------+----------------+---------+ | 3 | | | 4 | | | +-------+----------------+-------+-------+----------------+---------+ | 5 | GND | - | 6 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 7 | | | 8 | | | +-------+----------------+-------+-------+----------------+---------+ | 9 | | | 10 | | | +-------+----------------+-------+-------+----------------+---------+ | 11 | GND | - | 12 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 13 | | | 14 | | | +-------+----------------+-------+-------+----------------+---------+ | 15 | | | 16 | | | +-------+----------------+-------+-------+----------------+---------+ | 17 | GND | - | 18 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 19 | | | 20 | | | +-------+----------------+-------+-------+----------------+---------+ | 21 | | | 22 | | | +-------+----------------+-------+-------+----------------+---------+ | 23 | GND | - | 24 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 25 | | | 26 | | | +-------+----------------+-------+-------+----------------+---------+ | 27 | | | 28 | | | +-------+----------------+-------+-------+----------------+---------+ | 29 | GND | - | 30 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 31 | BANK112_TX0_N | AA1 | 32 | BANK112_RX0_N | AB3 | +-------+----------------+-------+-------+----------------+---------+ | 33 | BANK112_TX0_P | AA2 | 34 | BANK112_RX0_P | AB4 | +-------+----------------+-------+-------+----------------+---------+ | 35 | GND | R13 | 36 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 37 | BANK112_TX1_N | W1 | 38 | BANK112_RX1_N | Y3 | +-------+----------------+-------+-------+----------------+---------+ | 39 | BANK112_TX1_P | W2 | 40 | BANK112_RX1_P | Y4 | +-------+----------------+-------+-------+----------------+---------+ | 41 | GND | R13 | 42 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 43 | BANK112_TX2_N | U1 | 44 | BANK112_RX2_N | V3 | +-------+----------------+-------+-------+----------------+---------+ | 45 | BANK112_TX2_P | U2 | 46 | BANK112_RX2_P | V4 | +-------+----------------+-------+-------+----------------+---------+ | 47 | GND | R13 | 48 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 49 | BANK112_TX3_N | R1 | 50 | BANK112_RX3_N | T3 | +-------+----------------+-------+-------+----------------+---------+ | 51 | BANK112_TX3_P | R2 | 52 | BANK112_RX3_P | T4 | +-------+----------------+-------+-------+----------------+---------+ | 53 | GND | R13 | 54 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 55 | BANK112_CLK0_N | R5 | 56 | BANK112_CLK1_N | U5 | +-------+----------------+-------+-------+----------------+---------+ | 57 | BANK112_CLK0_P | R6 | 58 | BANK112_CLK1_P | U6 | +-------+----------------+-------+-------+----------------+---------+ | 59 | GND | - | 60 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 61 | | | 62 | BANK111_RX3_N | AD3 | +-------+----------------+-------+-------+----------------+---------+ | 63 | | | 64 | BANK111_RX3_P | AD4 | +-------+----------------+-------+-------+----------------+---------+ | 65 | GND | - | 66 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 67 | | | 68 | BANK111_TX3_N | AC1 | +-------+----------------+-------+-------+----------------+---------+ | 69 | | | 70 | BANK111_TX3_P | AC2 | +-------+----------------+-------+-------+----------------+---------+ | 71 | GND | - | 72 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 73 | | | 74 | BANK111_RX2_N | AC5 | +-------+----------------+-------+-------+----------------+---------+ | 75 | | | 76 | BANK111_RX2_P | AC6 | +-------+----------------+-------+-------+----------------+---------+ | 77 | GND | - | 78 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 79 | | | 80 | BANK111_TX2_N | AE1 | +-------+----------------+-------+-------+----------------+---------+ | 81 | | | 82 | BANK111_TX2_P | AE2 | +-------+----------------+-------+-------+----------------+---------+ | 83 | GND | - | 84 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 85 | | | 86 | BANK111_RX1_N | AE5 | +-------+----------------+-------+-------+----------------+---------+ | 87 | | | 88 | BANK111_RX1_P | AE6 | +-------+----------------+-------+-------+----------------+---------+ | 89 | GND | - | 90 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 91 | | | 92 | BANK111_TX1_N | AF3 | +-------+----------------+-------+-------+----------------+---------+ | 93 | | | 94 | BANK111_TX1_P | AF4 | +-------+----------------+-------+-------+----------------+---------+ | 95 | GND | - | 96 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 97 | | | 98 | BANK111_RX0_N | AD7 | +-------+----------------+-------+-------+----------------+---------+ | 99 | | | 100 | BANK111_RX0_P | AD8 | +-------+----------------+-------+-------+----------------+---------+ | 101 | GND | - | 102 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 103 | | | 104 | BANK111_TX0_N | AF7 | +-------+----------------+-------+-------+----------------+---------+ | 105 | | | 106 | BANK111_TX0_P | AF8 | +-------+----------------+-------+-------+----------------+---------+ | 107 | GND | - | 108 | GND | R13 | +-------+----------------+-------+-------+----------------+---------+ | 109 | | | 110 | BANK111_CLK0_N | W5 | +-------+----------------+-------+-------+----------------+---------+ | 111 | | | 112 | BANK111_CLK0_P | W6 | +-------+----------------+-------+-------+----------------+---------+ | 113 | GND | - | 114 | GND | - | +-------+----------------+-------+-------+----------------+---------+ | 115 | | | 116 | | | +-------+----------------+-------+-------+----------------+---------+ | 117 | | | 118 | | | +-------+----------------+-------+-------+----------------+---------+ | 119 | GND | - | 120 | GND | - | +-------+----------------+-------+-------+----------------+---------+ **J31连接器的引脚分配** +---------+-----------+---------+----------+-------------+-----------+ | **J3 | **信 | **ZYNQ | **J | **信号 | **ZYN | | 1管脚** | 号名称** | 引脚号**| 31管脚** | 名称** | Q引脚号** | | | | | | | | +=========+===========+=========+==========+=============+===========+ | 1 | FPGA_TCK | W12 | 2 | FPGA_TDI | V11 | +---------+-----------+---------+----------+-------------+-----------+ | 3 | FPGA_TMS | W11 | 4 | FPGA_TDO | W10 | +---------+-----------+---------+----------+-------------+-----------+ | 5 | GND | - | 6 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 7 | B35_L3_P | G10 | 8 | B35_L2_P | E10 | +---------+-----------+---------+----------+-------------+-----------+ | 9 | B35_L3_N | F10 | 10 | B35_L2_N | D10 | +---------+-----------+---------+----------+-------------+-----------+ | 11 | GND | - | 12 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 13 | B35_L7_N | H12 | 14 | B35_L6_P | F13 | +---------+-----------+---------+----------+-------------+-----------+ | 15 | B35_L7_P | H13 | 16 | B35_L6_N | E13 | +---------+-----------+---------+----------+-------------+-----------+ | 17 | GND | - | 18 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 19 | B35_L4_P | E11 | 20 | B35_L23_P | C11 | +---------+-----------+---------+----------+-------------+-----------+ | 21 | B35_L4_N | D11 | 22 | B35_L23_N | B11 | +---------+-----------+---------+----------+-------------+-----------+ | 23 | GND | - | 24 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 25 | B35_L5_N | G11 | 26 | B35_L22_P | C12 | +---------+-----------+---------+----------+-------------+-----------+ | 27 | B35_L5_P | G12 | 28 | B35_L22_N | B12 | +---------+-----------+---------+----------+-------------+-----------+ | 29 | GND | - | 30 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 31 | B35_L8_P | K13 | 32 | B35_L24_N | A12 | +---------+-----------+---------+----------+-------------+-----------+ | 33 | B35_L8_N | J13 | 34 | B35_L24_P | A13 | +---------+-----------+---------+----------+-------------+-----------+ | 35 | GND | - | 36 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 37 | B35_L12_P | J14 | 38 | B35_L11_N | F14 | +---------+-----------+---------+----------+-------------+-----------+ | 39 | B35_L12_N | H14 | 40 | B35_L11_P | G14 | +---------+-----------+---------+----------+-------------+-----------+ | 41 | GND | - | 42 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 43 | B35_L9_P | K15 | 44 | B35_L19_N | C13 | +---------+-----------+---------+----------+-------------+-----------+ | 45 | B35_L9_N | J15 | 46 | B35_L19_P | D13 | +---------+-----------+---------+----------+-------------+-----------+ | 47 | GND | - | 48 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 49 | B35_L1_N | E12 | 50 | B35_L21_N | A14 | +---------+-----------+---------+----------+-------------+-----------+ | 51 | B35_L1_P | F12 | 52 | B35_L21_P | A15 | +---------+-----------+---------+----------+-------------+-----------+ | 53 | GND | - | 54 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 55 | B35_L17_N | B15 | 56 | B35_L14_P | F15 | +---------+-----------+---------+----------+-------------+-----------+ | 57 | B35_L17_P | B16 | 58 | B35_L14_N | E15 | +---------+-----------+---------+----------+-------------+-----------+ | 59 | GND | - | 60 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 61 | B35_L20_N | B14 | 62 | B35_L18_P | B17 | +---------+-----------+---------+----------+-------------+-----------+ | 63 | B35_L20_P | C14 | 64 | B35_L18_N | A17 | +---------+-----------+---------+----------+-------------+-----------+ | 65 | GND | - | 66 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 67 | B35_L10_N | G15 | 68 | B35_L15_N | C16 | +---------+-----------+---------+----------+-------------+-----------+ | 69 | B35_L10_P | G16 | 70 | B35_L15_P | C17 | +---------+-----------+---------+----------+-------------+-----------+ | 71 | GND | - | 72 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 73 | B35_L13_N | D14 | 74 | | | +---------+-----------+---------+----------+-------------+-----------+ | 75 | B35_L13_P | D15 | 76 | | | +---------+-----------+---------+----------+-------------+-----------+ | 77 | GND | - | 78 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 79 | B35_L16_N | D16 | 80 | | | +---------+-----------+---------+----------+-------------+-----------+ | 81 | B35_L16_P | E16 | 82 | | | +---------+-----------+---------+----------+-------------+-----------+ | 83 | GND | - | 84 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 85 | | | 86 | | | +---------+-----------+---------+----------+-------------+-----------+ | 87 | | | 88 | | | +---------+-----------+---------+----------+-------------+-----------+ | 89 | GND | - | 90 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 91 | | | 92 | | | +---------+-----------+---------+----------+-------------+-----------+ | 93 | | | 94 | | | +---------+-----------+---------+----------+-------------+-----------+ | 95 | GND | - | 96 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 97 | | | 98 | | | +---------+-----------+---------+----------+-------------+-----------+ | 99 | | | 100 | | | +---------+-----------+---------+----------+-------------+-----------+ | 101 | GND | - | 102 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 103 | | | 104 | | | +---------+-----------+---------+----------+-------------+-----------+ | 105 | | | 106 | | | +---------+-----------+---------+----------+-------------+-----------+ | 107 | GND | - | 108 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 109 | | | 110 | | | +---------+-----------+---------+----------+-------------+-----------+ | 111 | | | 112 | | | +---------+-----------+---------+----------+-------------+-----------+ | 113 | GND | - | 114 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 115 | | | 116 | | | +---------+-----------+---------+----------+-------------+-----------+ | 117 | SYS_RESET | - | 118 | | | +---------+-----------+---------+----------+-------------+-----------+ | 119 | GND | - | 120 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ **J32连接器的引脚分配** +---------+-----------+---------+----------+-------------+----------+ | **J3 | **信 | **ZYNQ | **J | **信 | **ZYNQ | | 2管脚** | 号名称** | 引脚号**| 32管脚** | 号名称** | 引脚号** | | | | | | | | +=========+===========+=========+==========+=============+==========+ | 1 | PS_MIO5 | C26 | 2 | PS_MIO17 | G17 | +---------+-----------+---------+----------+-------------+----------+ | 3 | PS_MIO4 | F24 | 4 | PS_MIO18 | G20 | +---------+-----------+---------+----------+-------------+----------+ | 5 | GND | - | 6 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 7 | PS_MIO14 | D23 | 8 | PS_MIO19 | G19 | +---------+-----------+---------+----------+-------------+----------+ | 9 | PS_MIO15 | C24 | 10 | PS_MIO20 | H19 | +---------+-----------+---------+----------+-------------+----------+ | 11 | GND | - | 12 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 13 | PS_MIO52 | A20 | 14 | PS_MIO16 | G21 | +---------+-----------+---------+----------+-------------+----------+ | 15 | PS_MIO53 | A19 | 16 | PS_MIO21 | F22 | +---------+-----------+---------+----------+-------------+----------+ | 17 | GND | - | 18 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 19 | PS_MIO7 | E23 | 20 | PS_MIO26 | H17 | +---------+-----------+---------+----------+-------------+----------+ | 21 | | | 22 | PS_MIO25 | F19 | +---------+-----------+---------+----------+-------------+----------+ | 23 | GND | - | 24 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 25 | PS_MIO40 | C22 | 26 | PS_MIO24 | J19 | +---------+-----------+---------+----------+-------------+----------+ | 27 | PS_MIO41 | C19 | 28 | PS_MIO23 | F20 | +---------+-----------+---------+----------+-------------+----------+ | 29 | GND | - | 30 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 31 | PS_MIO42 | F17 | 32 | PS_MIO27 | F18 | +---------+-----------+---------+----------+-------------+----------+ | 33 | PS_MIO43 | D18 | 34 | PS_MIO22 | G22 | +---------+-----------+---------+----------+-------------+----------+ | 35 | GND | - | 36 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 37 | PS_MIO44 | E18 | 38 | PS_MIO30 | K19 | +---------+-----------+---------+----------+-------------+----------+ | 39 | PS_MIO45 | C18 | 40 | PS_MIO29 | E20 | +---------+-----------+---------+----------+-------------+----------+ | 41 | GND | - | 42 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 43 | | | 44 | PS_MIO36 | K16 | +---------+-----------+---------+----------+-------------+----------+ | 45 | | | 46 | PS_MIO31 | E21 | +---------+-----------+---------+----------+-------------+----------+ | 47 | GND | - | 48 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 49 | | | 50 | PS_MIO32 | K17 | +---------+-----------+---------+----------+-------------+----------+ | 51 | | | 52 | PS_MIO33 | E22 | +---------+-----------+---------+----------+-------------+----------+ | 53 | GND | - | 54 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 55 | | | 56 | PS_MIO34 | J16 | +---------+-----------+---------+----------+-------------+----------+ | 57 | | | 58 | PS_MIO35 | D19 | +---------+-----------+---------+----------+-------------+----------+ | 59 | GND | - | 60 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 61 | | | 62 | PS_MIO28 | J18 | +---------+-----------+---------+----------+-------------+----------+ | 63 | | | 64 | PS_MIO37 | D20 | +---------+-----------+---------+----------+-------------+----------+ | 65 | GND | - | 66 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 67 | | | 68 | PS_MIO38 | D21 | +---------+-----------+---------+----------+-------------+----------+ | 69 | | | 70 | PS_MIO39 | C21 | +---------+-----------+---------+----------+-------------+----------+ | 71 | GND | - | 72 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 73 | | | 74 | | | +---------+-----------+---------+----------+-------------+----------+ | 75 | | | 76 | | | +---------+-----------+---------+----------+-------------+----------+ | 77 | GND | - | 78 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 79 | | | 80 | | | +---------+-----------+---------+----------+-------------+----------+ | 81 | | | 82 | | | +---------+-----------+---------+----------+-------------+----------+ | 83 | GND | - | 84 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 85 | B13_L1_P | AA25 | 86 | B13_L11_P | AD23 | +---------+-----------+---------+----------+-------------+----------+ | 87 | B13_L1_N | AB25 | 88 | B13_L11_N | AD24 | +---------+-----------+---------+----------+-------------+----------+ | 89 | GND | - | 90 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 91 | B13_L6_P | AA24 | 92 | B13_L4_P | AD25 | +---------+-----------+---------+----------+-------------+----------+ | 93 | B13_L6_N | AB24 | 94 | B13_L4_N | AD26 | +---------+-----------+---------+----------+-------------+----------+ | 95 | GND | - | 96 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 97 | B13_L2_N | AC26 | 98 | B13_L5_P | AF24 | +---------+-----------+---------+----------+-------------+----------+ | 99 | B13_L2_P | AB26 | 100 | B13_L5_N | AF25 | +---------+-----------+---------+----------+-------------+----------+ | 101 | GND | - | 102 | GND | - | +---------+-----------+---------+----------+-------------+----------+ | 103 | B13_L12_P | AC23 | 104 | B13_L3_P | AE25 | +---------+-----------+---------+----------+-------------+----------+ | 105 | B13_L12_N | AC24 | 106 | B13_L3_N | AE26 | +---------+-----------+---------+----------+-------------+----------+ | 107 | +5V | - | 108 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 109 | +5V | - | 110 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 111 | +5V | - | 112 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 113 | +5V | - | 114 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 115 | +5V | - | 116 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 117 | +5V | - | 118 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ | 119 | +5V | - | 120 | +5V | - | +---------+-----------+---------+----------+-------------+----------+ 扩展板 ------ 简介 ~~~~ 通过前面的功能简介，我们可以了解到扩展板部分的功能 - 1路PCIEx4接口 - 4路光纤接口 - 2路10/100M/1000M以太网RJ-45接口 - 1路HDMI视频输出接口 - 1路HDMI视频输入接口 - 4路USB HOST接口 - 1路USB Uart通信接口 - 1路SD卡接口 - 1路40针扩展口 - JTAG调试接口 - 4个独立按键 - 4个用户LED灯 USB转串口 ~~~~~~~~~ AX7Z035扩展板上配备了一个Uart转USB接口，用于系统调试。转换芯片采用Silicon Labs CP2102GM的USB-UAR芯片, USB接口采用MINI USB接口，可以用一根USB线将它连接到上PC的USB口进行核心板的单独供电和串口数据通信 。 USB Uart电路设计的示意图如下图所示: .. image:: images/03_media/image22.png 3-2-1 USB转串口示意图 下图为USB转串口的实物图 .. image:: images/03_media/image23.png 3-2-2 USB转串口实物图 **USB转串口的ZYNQ引脚分配：** +---------------+---------------+------------+------------------------+ | **信号名称** | **ZYNQ | **ZY | **备注** | | | 引脚名** | NQ引脚号** | | +===============+===============+============+========================+ | UART_RXD | PS_MIO14_500 | D23 | Uart数据输入 | +---------------+---------------+------------+------------------------+ | UART_TXD | PS_MIO15_500 | C24 | Uart数据输出 | +---------------+---------------+------------+------------------------+ 千兆以太网接口 ~~~~~~~~~~~~~~ AX7Z035扩展板上有2路千兆以太网接口，其中1路以太网接口是连接的PS系统端，另外1路以太网接口是连接到PL的逻辑IO口上。连接到PL端的千兆以太网接口需要通过程序调用IP挂载到ZYNQ的AXI总线系统上。 以太网芯片采用Micrel公司的KSZ9031RNX以太网PHY芯片为用户提供网络通信服务。PS端的以太网PHY芯片是连接到ZYNQ的PS端BANK501的GPIO接口上。PL端的的以太网PHY芯片是连接到BANK35 的IO上。KSZ9031RNX芯片支持10/100/1000 Mbps网络传输速率，通过RGMII接口跟Zynq7000系统的MAC层进行数据通信。KSZ9031RNX支持ＭDI/MDX自适应，各种速度自适应，Master/Slave自适应，支持MDIO总线进行PHY的寄存器管理。 KSZ9031RNX上电会检测一些特定的IO的电平状态，从而确定自己的工作模式。表3-3-1 描述了GPHY芯片上电之后的默认设定信息。 +-----------------+-------------------------+-------------------------+ | **配置Pin脚** | **说明** | **配置值** | +=================+=========================+=========================+ | **PHYAD[2:0]** | MDIO/MDC 模式的PHY地址 | PHY Address 为 011 | +-----------------+-------------------------+-------------------------+ | **CLK125_EN** | 使能125Mhz时钟输出选择 | 使能 | +-----------------+-------------------------+-------------------------+ | **LED_MODE** | LED灯模式配置 | 单个LED灯模式 | +-----------------+-------------------------+-------------------------+ | **MODE0~MODE3** | 链路自适应和全双工配置 | 10/100/1000自适 | | | | 应，兼容全双工、半双工 | +-----------------+-------------------------+-------------------------+ 表3-3-1PHY芯片默认配置值 当网络连接到千兆以太网时，ZYNQ和PHY芯片KSZ9031RNX的数据传输时通过RGMII总线通信，传输时钟为125Mhz，数据在时钟的上升沿和下降样采样。 当网络连接到百兆以太网时，ZYNQ和PHY芯片KSZ9031RNX的数据传输时通过RMII总线通信，传输时钟为25Mhz。数据在时钟的上升沿和下降样采样。 图3-3-1为ZYNQ PS端1路以太网PHY芯片连接示意图: |image1| 图3-3-1 ZYNQ PS系统与GPHY连接示意图 图3-3-2为ZYNQ PL端1路以太网PHY芯片连接示意图: .. image:: images/03_media/image25.png 图3-3-2 ZYNQ PL端与GPHY连接示意图 **PS端千兆以太网引脚分配如下：** +-----------------+-----------------+----------------+----------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ引脚号** | **备注** | +=================+=================+================+================+ | **PHY1_TXCK** | PS_MIO16_501 | G21 | RGMII 发送时钟 | +-----------------+-----------------+----------------+----------------+ | **PHY1_TXD0** | PS_MIO17_501 | G17 | 发送数据bit０ | +-----------------+-----------------+----------------+----------------+ | **PHY1_TXD1** | PS_MIO18_501 | G20 | 发送数据bit1 | +-----------------+-----------------+----------------+----------------+ | **PHY1_TXD2** | PS_MIO19_501 | G19 | 发送数据bit2 | +-----------------+-----------------+----------------+----------------+ | **PHY1_TXD3** | PS_MIO20_501 | H19 | 发送数据bit3 | +-----------------+-----------------+----------------+----------------+ | **PHY1_TXCTL** | PS_MIO21_501 | F22 | 发送使能信号 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXCK** | PS_MIO22_501 | G22 | RGMII接收时钟 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXD0** | PS_MIO23_501 | F20 | 接收数据Bit0 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXD1** | PS_MIO24_501 | J19 | 接收数据Bit1 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXD2** | PS_MIO25_501 | F19 | 接收数据Bit2 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXD3** | PS_MIO26_501 | H17 | 接收数据Bit3 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RXCTL** | PS_MIO27_501 | F18 | 接 | | | | | 收数据有效信号 | +-----------------+-----------------+----------------+----------------+ | **PHY1_MDC** | PS_MIO52_501 | A20 | MDIO管理时钟 | +-----------------+-----------------+----------------+----------------+ | **PHY1_MDIO** | PS_MIO53_501 | A19 | MDIO管理数据 | +-----------------+-----------------+----------------+----------------+ | **PHY1_RESET** | PS_MIO7_500 | E23 | 复位信号 | +-----------------+-----------------+----------------+----------------+ **PL端千兆以太网引脚分配如下：** +----------------+----------------------+--------------+--------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ | **备注** | | | | 引脚号** | | +================+======================+==============+==============+ | PHY2_TXCK | B35_L23_P | C11 | RGMII | | | | | 发送时钟 | +----------------+----------------------+--------------+--------------+ | PHY2_TXD0 | B35_L2_P | E10 | 发 | | | | | 送数据bit０ | +----------------+----------------------+--------------+--------------+ | PHY2_TXD1 | B35_L2_N | D10 | 发送数据bit1 | +----------------+----------------------+--------------+--------------+ | PHY2_TXD2 | B35_L6_P | F13 | 发送数据bit2 | +----------------+----------------------+--------------+--------------+ | PHY2_TXD3 | B35_L6_N | E13 | 发送数据bit3 | +----------------+----------------------+--------------+--------------+ | PHY2_TXCTL | B35_L23_N | B11 | 发送使能信号 | +----------------+----------------------+--------------+--------------+ | PHY2_RXCK | B35_L11_P | G14 | R | | | | | GMII接收时钟 | +----------------+----------------------+--------------+--------------+ | PHY2_RXD0 | B35_L24_P | A13 | 接收数据Bit0 | +----------------+----------------------+--------------+--------------+ | PHY2_RXD1 | B35_L24_N | A12 | 接收数据Bit1 | +----------------+----------------------+--------------+--------------+ | PHY2_RXD2 | B35_L22_N | B12 | 接收数据Bit2 | +----------------+----------------------+--------------+--------------+ | PHY2_RXD3 | B35_L22_P | C12 | 接收数据Bit3 | +----------------+----------------------+--------------+--------------+ | PHY2_RXCTL | B35_L11_N | F14 | 接收 | | | | | 数据有效信号 | +----------------+----------------------+--------------+--------------+ | PHY2_MDC | B35_L19_N | C13 | MDIO管理时钟 | +----------------+----------------------+--------------+--------------+ | PHY2_MDIO | B35_L19_P | D13 | MDIO管理数据 | +----------------+----------------------+--------------+--------------+ | PHY2_RESET | B35_L21_N | A14 | 复位信号 | +----------------+----------------------+--------------+--------------+ USB2.0 Host接口 ~~~~~~~~~~~~~~~ AX7Z035扩展板上有4个USB2.0 HOST接口，USB2.0收发器采用的是一个1.8V的，高速的支持ULPI标准接口的USB3320C-EZK芯片，再通过一个USB HUB芯片USB2514扩展出4路USB HOST接口。ZYNQ的USB总线接口和USB3320C-EZK收发器相连接，实现高速的USB2.0 Host模式的数据通信。USB3320C的USB的数据和控制信号连接到ZYNQ芯片PS端的BANK501的IO口上，USB接口差分信号(DP/DM)连接到USB2514芯片扩展出4个USB接口。2个24MHz的晶振为分别为USB3320C和USB2514芯片提供时钟。 4个USB接口为扁型USB接口(USB Type A)，方便用户同时连接不同的USB Slave外设(比如USB鼠标和USB键盘），每个USB接口提供了+5V的电源。 ZYNQ处理器和USB3320C-EZK芯片及USB2514芯片连接的示意图如3-4-1所示： .. image:: images/03_media/image26.png 图3-4-1 Zynq7000和USB芯片间连接示意图 **USB2.0引脚分配：** +---------------+---------------+------------+------------------------+ | **信号名称** | **ZYNQ | **ZY | **备注** | | | 引脚名** | NQ引脚号** | | +===============+===============+============+========================+ | OTG_DATA4 | PS_MIO28_501 | J18 | USB数据Bit4 | +---------------+---------------+------------+------------------------+ | OTG_DIR | PS_MIO29_501 | E20 | USB数据方向信号 | +---------------+---------------+------------+------------------------+ | OTG_STP | PS_MIO30_501 | K19 | USB停止信号 | +---------------+---------------+------------+------------------------+ | OTG_NXT | PS_MIO31_501 | E21 | USB下一数据信号 | +---------------+---------------+------------+------------------------+ | OTG_DATA0 | PS_MIO32_501 | K17 | USB数据Bit0 | +---------------+---------------+------------+------------------------+ | OTG_DATA1 | PS_MIO33_501 | E22 | USB数据Bit1 | +---------------+---------------+------------+------------------------+ | OTG_DATA2 | PS_MIO34_501 | J16 | USB数据Bit2 | +---------------+---------------+------------+------------------------+ | OTG_DATA3 | PS_MIO35_501 | D19 | USB数据Bit3 | +---------------+---------------+------------+------------------------+ | OTG_CLK | PS_MIO36_501 | K16 | USB时钟信号 | +---------------+---------------+------------+------------------------+ | OTG_DATA5 | PS_MIO37_501 | D20 | USB数据Bit5 | +---------------+---------------+------------+------------------------+ | OTG_DATA6 | PS_MIO38_501 | D21 | USB数据Bit6 | +---------------+---------------+------------+------------------------+ | OTG_DATA7 | PS_MIO39_501 | C21 | USB数据Bit7 | +---------------+---------------+------------+------------------------+ | OTG_RESETN | PS_MIO7_500 | E23 | USB复位信号 | +---------------+---------------+------------+------------------------+ HDMI输出接口 ~~~~~~~~~~~~ HDMI输出接口的实现，是选用ANALOG DEVICE公司的ADV7511 HDMI（DVI）编码芯片，最高支持1080P@60Hz输出，支持3D输出。 其中，ADV7511的视频数字接口，音频数字接口和I2C配置接口和ZYNQ7000 PL部分的BANK35 IO相连，ZYNQ7000系统通过I2C管脚来对ADV7511进行初始化和控制操作。ADV7511芯片和ZYNQ7000的硬件连接示意图如下图3-5-1所示： .. image:: images/03_media/image27.png 图3-5-1 HDMI输出接口设计原理图 **ZYNQ的引脚分配：** +----------------+-------------------------+------+-------------------+ | **信号名称** | **ZYNQ引脚名** | **ZY | **备注** | | | | NQ | | | | | 引脚 | | | | | 号** | | +================+=========================+======+===================+ | HDMI_CLK | B35_L9_P | K15 | HDMI视频信号时钟 | +----------------+-------------------------+------+-------------------+ | HDMI_HSYNC | B35_L3_N | F10 | H | | | | | DMI视频信号行同步 | +----------------+-------------------------+------+-------------------+ | HDMI_VSYNC | B35_L3_P | G10 | H | | | | | DMI视频信号列同步 | +----------------+-------------------------+------+-------------------+ | HDMI_DE | B35_L7_N | H12 | HDMI视频信号有效 | +----------------+-------------------------+------+-------------------+ | HDMI_D0 | B35_L7_P | H13 | HDMI视频信号数据0 | +----------------+-------------------------+------+-------------------+ | HDMI_D1 | B35_L4_P | E11 | HDMI视频信号数据1 | +----------------+-------------------------+------+-------------------+ | HDMI_D2 | B35_L4_N | D11 | HDMI视频信号数据2 | +----------------+-------------------------+------+-------------------+ | HDMI_D3 | B35_L5_N | G11 | HDMI视频信号数据3 | +----------------+-------------------------+------+-------------------+ | HDMI_D4 | B35_L5_P | G12 | HDMI视频信号数据4 | +----------------+-------------------------+------+-------------------+ | HDMI_D5 | B35_L8_P | K13 | HDMI视频信号数据5 | +----------------+-------------------------+------+-------------------+ | HDMI_D6 | B35_L8_N | J13 | HDMI视频信号数据6 | +----------------+-------------------------+------+-------------------+ | HDMI_D7 | B35_L12_P | J14 | HDMI视频信号数据7 | +----------------+-------------------------+------+-------------------+ | HDMI_D8 | B35_L12_N | H14 | HDMI视频信号数据8 | +----------------+-------------------------+------+-------------------+ | HDMI_D9 | B35_L9_N | J15 | HDMI视频信号数据9 | +----------------+-------------------------+------+-------------------+ | HDMI_D10 | B35_L1_N | E12 | H | | | | | DMI视频信号数据10 | +----------------+-------------------------+------+-------------------+ | HDMI_D11 | B35_L1_P | F12 | H | | | | | DMI视频信号数据11 | +----------------+-------------------------+------+-------------------+ | HDMI_D12 | B35_L17_N | B15 | H | | | | | DMI视频信号数据12 | +----------------+-------------------------+------+-------------------+ | HDMI_D13 | B35_L17_P | B16 | H | | | | | DMI视频信号数据13 | +----------------+-------------------------+------+-------------------+ | HDMI_D14 | B35_L20_N | B14 | H | | | | | DMI视频信号数据14 | +----------------+-------------------------+------+-------------------+ | HDMI_D15 | B35_L20_P | C14 | H | | | | | DMI视频信号数据15 | +----------------+-------------------------+------+-------------------+ | HDMI_D16 | B35_L10_N | G15 | H | | | | | DMI视频信号数据16 | +----------------+-------------------------+------+-------------------+ | HDMI_D17 | B35_L10_P | G16 | H | | | | | DMI视频信号数据17 | +----------------+-------------------------+------+-------------------+ | HDMI_D18 | B35_L13_N | D14 | H | | | | | DMI视频信号数据18 | +----------------+-------------------------+------+-------------------+ | HDMI_D19 | B35_L13_P | D15 | H | | | | | DMI视频信号数据19 | +----------------+-------------------------+------+-------------------+ | HDMI_D20 | B35_L16_N | D16 | H | | | | | DMI视频信号数据20 | +----------------+-------------------------+------+-------------------+ | HDMI_D21 | B35_L16_P | E16 | H | | | | | DMI视频信号数据21 | +----------------+-------------------------+------+-------------------+ | HDMI_D22 | B35_L15_P | C17 | H | | | | | DMI视频信号数据22 | +----------------+-------------------------+------+-------------------+ | HDMI_D23 | B35_L15_N | C16 | H | | | | | DMI视频信号数据23 | +----------------+-------------------------+------+-------------------+ | HDMI_INT | B35_L21_P | A15 | HDMI中断信号 | +----------------+-------------------------+------+-------------------+ | HDMI_SCL | B35_L18_P | B17 | HDMI IIC控制时钟 | +----------------+-------------------------+------+-------------------+ | HDMI \_SDA | B35_L18_N | A17 | HDMI IIC控制数据 | +----------------+-------------------------+------+-------------------+ HDMI输入接口 ~~~~~~~~~~~~ HDMI输入接口我们采用了Silion Image公司的SIL9011/ SIL9013HDMI解码芯片，最高支持1080P@60Hz输入，支持不同格式的数据输出。； 其中，SIL9011/ SIL9013的IIC配置接口也与FPGA的BANK13的IO相连，ZYNQ通过I2C总线的编程来对SIL9013进行初始化和控制操作，HDMI输入接口的硬件连接如图3-6-1所示。 .. image:: images/03_media/image28.png 图3-6-1 HDMI 输入原理图 **ZYNQ的引脚分配：** +---------------+--------------+------------+------------------------+ | **信号名称** | **ZYNQ | **ZYNQ | **备注** | | | 引脚名** | 引脚号** | | +===============+==============+============+========================+ | 9013_nRESET | B13_L24_N | AA18 | 9013复位信号 | +---------------+--------------+------------+------------------------+ | 9013_CLK | B13_L11_P | AD23 | 9013视频信号时钟 | +---------------+--------------+------------+------------------------+ | 9013_HS | B13_L5_P | AF24 | 9013视频信号行同步 | +---------------+--------------+------------+------------------------+ | 9013_VS | B13_L5_N | AF25 | 9013视频信号列同步 | +---------------+--------------+------------+------------------------+ | 9013_DE | B13_L4_N | AD26 | 9013视频信号有效 | +---------------+--------------+------------+------------------------+ | 9013_D[0] | B13_L4_P | AD25 | 9013视频信号数据0 | +---------------+--------------+------------+------------------------+ | 9013_D[1] | B13_L11_N | AD24 | 9013视频信号数据1 | +---------------+--------------+------------+------------------------+ | 9013_D[2] | B13_L12_N | AC24 | 9013视频信号数据2 | +---------------+--------------+------------+------------------------+ | 9013_D[3] | B13_L12_P | AC23 | 9013视频信号数据3 | +---------------+--------------+------------+------------------------+ | 9013_D[4] | B13_L2_P | AB26 | 9013视频信号数据4 | +---------------+--------------+------------+------------------------+ | 9013_D[5] | B13_L2_N | AC26 | 9013视频信号数据5 | +---------------+--------------+------------+------------------------+ | 9013_D[6] | B13_L6_N | AB24 | 9013视频信号数据6 | +---------------+--------------+------------+------------------------+ | 9013_D[7] | B13_L6_P | AA24 | 9013视频信号数据7 | +---------------+--------------+------------+------------------------+ | 9013_D[8] | B13_L1_N | AB25 | 9013视频信号数据8 | +---------------+--------------+------------+------------------------+ | 9013_D[9] | B13_L1_P | AA25 | 9013视频信号数据9 | +---------------+--------------+------------+------------------------+ | 9013_D[10] | B13_L8_P | AE23 | 9013视频信号数据10 | +---------------+--------------+------------+------------------------+ | 9013_D[11] | B13_L8_N | AF23 | 9013视频信号数据11 | +---------------+--------------+------------+------------------------+ | 9013_D[12] | B13_L10_N | AA23 | 9013视频信号数据12 | +---------------+--------------+------------+------------------------+ | 9013_D[13] | B13_L10_P | AA22 | 9013视频信号数据13 | +---------------+--------------+------------+------------------------+ | 9013_D[14] | B13_L15_N | AF20 | 9013视频信号数据14 | +---------------+--------------+------------+------------------------+ | 9013_D[15] | B13_L15_P | AF19 | 9013视频信号数据15 | +---------------+--------------+------------+------------------------+ | 9013_D[16] | B13_L23_N | W19 | 9013视频信号数据16 | +---------------+--------------+------------+------------------------+ | 9013_D[17] | B13_L23_P | W18 | 9013视频信号数据17 | +---------------+--------------+------------+------------------------+ | 9013_D[18] | B13_L22_P | AA19 | 9013视频信号数据18 | +---------------+--------------+------------+------------------------+ | 9013_D[19] | B13_L22_N | AB19 | 9013视频信号数据19 | +---------------+--------------+------------+------------------------+ | 9013_D[20] | B13_L17_N | AD19 | 9013视频信号数据20 | +---------------+--------------+------------+------------------------+ | 9013_D[21] | B13_L17_P | AD18 | 9013视频信号数据21 | +---------------+--------------+------------+------------------------+ | 9013_D[22] | B13_L19_N | Y20 | 9013视频信号数据22 | +---------------+--------------+------------+------------------------+ | 9013_D[23] | B13_L19_P | W20 | 9013视频信号数据23 | +---------------+--------------+------------+------------------------+ | 9013_SCL | B13_L3_N | AE26 | 9013 IIC控制时钟 | +---------------+--------------+------------+------------------------+ | 9013 \_SDA | B13_L3_P | AE25 | 9013 IIC控制数据 | +---------------+--------------+------------+------------------------+ 光纤接口 ~~~~~~~~ AX7Z035扩展板上有4路光纤接口，用户可以购买SFP光模块(市场上1.25G，2.5G，10G光模块）插入到这4个光纤接口中进行光纤数据通信。4路光纤接口分别跟ZYNQ的BANK111的GTX收发器的2路RX/TX相连接，TX信号和RX信号都是以差分信号方式通过隔直电容连接ZYNQ和光模块，每路TX发送和RX接收数据速率高达10Gb/s。BANK111的GTX收发器的参考时钟由核心板的125M差分时钟提供。 FPGA和光纤设计示意图如下图3-7-1所示: .. image:: images/03_media/image29.png 图3-7-1光纤设计示意图 **4路光纤接口ZYNQ引脚分配如下：** +---------------+---------------+------------+------------------------+ | **信号名称** | **ZYNQ | **ZY | **备注** | | | 引脚名** | NQ引脚号** | | +===============+===============+============+========================+ | SFP1_TX_P | BANK111_TX0_P | AF8 | 光模块1数据发送正 | +---------------+---------------+------------+------------------------+ | SFP1_TX_N | BANK111_TX0_N | AF7 | 光模块1数据发送负 | +---------------+---------------+------------+------------------------+ | SFP1_RX_P | BANK111_RX0_P | AD8 | 光模块1数据接收正 | +---------------+---------------+------------+------------------------+ | SFP1_RX_N | BANK111_RX0_N | AD7 | 光模块1数据接收负 | +---------------+---------------+------------+------------------------+ | SFP2_TX_P | BANK111_TX1_P | AF4 | 光模块2数据发送正 | +---------------+---------------+------------+------------------------+ | SFP2_TX_N | BANK111_TX1_N | AF3 | 光模块2数据发送负 | +---------------+---------------+------------+------------------------+ | SFP2_RX_P | BANK111_RX1_P | AE6 | 光模块2数据接收正 | +---------------+---------------+------------+------------------------+ | SFP2_RX_N | BANK111_RX1_N | AE5 | 光模块2数据接收负 | +---------------+---------------+------------+------------------------+ | SFP3_TX_P | BANK111_TX2_P | AE2 | 光模块3数据发送正 | +---------------+---------------+------------+------------------------+ | SFP3_TX_N | BANK111_TX2_N | AE1 | 光模块3数据发送负 | +---------------+---------------+------------+------------------------+ | SFP3_RX_P | BANK111_RX2_P | AC6 | 光模块3数据接收正 | +---------------+---------------+------------+------------------------+ | SFP3_RX_N | BANK111_RX2_N | AC5 | 光模块3数据接收负 | +---------------+---------------+------------+------------------------+ | SFP4_TX_P | BANK111_TX3_P | AC2 | 光模块4数据发送正 | +---------------+---------------+------------+------------------------+ | SFP4_TX_N | BANK111_TX3_N | AC1 | 光模块4数据发送负 | +---------------+---------------+------------+------------------------+ | SFP4_RX_P | BANK111_RX3_P | AD4 | 光模块4数据接收正 | +---------------+---------------+------------+------------------------+ | SFP4_RX_N | BANK111_RX3_N | AD3 | 光模块4数据接收负 | +---------------+---------------+------------+------------------------+ | SFP12_TX_DIS | B12_L18_N | AF17 | 光模 | | | | | 块12光发射禁止，高有效 | +---------------+---------------+------------+------------------------+ | SFP34_TX_DIS | B12_L18_P | AE17 | 光模 | | | | | 块34光发射禁止，高有效 | +---------------+---------------+------------+------------------------+ PCIe插槽 ~~~~~~~~ AX7Z035扩展板上有一个PCIe x4的接口，为了兼容AC7Z100核心板，在PCB物理上做成PCIE x8的接口。在电气连接上我们只有4对收发器连接到PCIEx8的金手指上，所以只能实现PCIEex4, PCIex2, PCIex1的数据通信。 PCIe接口的收发信号直接跟ZYNQ BANK112的GTX收发器相连接，4路TX信号和RX信号都是以差分信号方式连接到BANK112，单通道通信速率可高达5G bit带宽。 开发板的PCIe接口的设计示意图如下图3-8-1所示,其中TX发送信号用AC耦合模式连接。 .. image:: images/03_media/image30.png 图3-8-1 PCIe插槽设计示意图 **PCIe x4接口ZYNQ引脚分配如下：** +---------------+-----------------+------------+----------------------+ | **信号名称** | **ZYNQ引脚名** | **ZY | **备注** | | | | NQ引脚号** | | +===============+=================+============+======================+ | PCIE_RX0_P | BANK112_RX3_P | T4 | PCIE通道0数据接收正 | +---------------+-----------------+------------+----------------------+ | PCIE_RX0_N | BANK112_RX3_N | T3 | PCIE通道0数据接收负 | +---------------+-----------------+------------+----------------------+ | PCIE_RX1_P | BANK112_RX2_P | V4 | PCIE通道1数据接收正 | +---------------+-----------------+------------+----------------------+ | PCIE_RX1_N | BANK112_RX2_N | V3 | PCIE通道1数据接收负 | +---------------+-----------------+------------+----------------------+ | PCIE_RX2_P | BANK112_RX1_P | Y4 | PCIE通道2数据接收正 | +---------------+-----------------+------------+----------------------+ | PCIE_RX2_N | BANK112_RX1_N | Y3 | PCIE通道2数据接收负 | +---------------+-----------------+------------+----------------------+ | PCIE_RX3_P | BANK112_RX0_P | AB4 | PCIE通道3数据接收正 | +---------------+-----------------+------------+----------------------+ | PCIE_RX3_N | BANK112_RX0_N | AB3 | PCIE通道3数据接收负 | +---------------+-----------------+------------+----------------------+ | PCIE_TX0_P | BANK112_TX0_P | AA2 | PCIE通道0数据发送正 | +---------------+-----------------+------------+----------------------+ | PCIE_TX0_N | BANK112_TX0_N | AA1 | PCIE通道0数据发送负 | +---------------+-----------------+------------+----------------------+ | PCIE_TX1_P | BANK112_TX1_P | W2 | PCIE通道1数据发送正 | +---------------+-----------------+------------+----------------------+ | PCIE_TX1_N | BANK112_TX1_N | W1 | PCIE通道1数据发送负 | +---------------+-----------------+------------+----------------------+ | PCIE_TX2_P | BANK112_TX2_P | U2 | PCIE通道2数据发送正 | +---------------+-----------------+------------+----------------------+ | PCIE_TX2_N | BANK112_TX2_N | U1 | PCIE通道2数据发送负 | +---------------+-----------------+------------+----------------------+ | PCIE_TX3_P | BANK112_TX3_P | R2 | PCIE通道3数据发送正 | +---------------+-----------------+------------+----------------------+ | PCIE_TX3_N | BANK112_TX3_N | R1 | PCIE通道3数据发送负 | +---------------+-----------------+------------+----------------------+ | PCIE_CLK_P | BANK112_CLK0_P | R6 | PCIE通道参考时钟正 | +---------------+-----------------+------------+----------------------+ | PCIE_CLK_N | BANK112_CLK0_N | R5 | PCIE通道参考时钟负 | +---------------+-----------------+------------+----------------------+ | PCIE_PERST | B13_L24_P | Y18 | PCIE板卡的复位信号 | +---------------+-----------------+------------+----------------------+ SD卡槽 ~~~~~~ AX7Z035底板包含了一个Micro型的SD卡接口，以提供用户访问SD卡存储器，用于存储ZYNQ芯片的BOOT程序，Linux操作系统内核, 文件系统以及其它的用户数据文件。 SDIO信号与ZYNQ的PS BANK501的IO信号相连，因为该BANK的VCCIO设置为1.8V，但SD卡的数据电平为3.3V, 我们这里通过TXS02612电平转换器来连接。Zynq7000 PS和SD卡连接器的原理图如图3-9-1所示。 .. image:: images/03_media/image31.png 图3-9-1 SD卡连接示意图 **SD卡槽引脚分配** +---------------+--------------+------------+------------------------+ | **信号名称** | **ZYNQ | **ZY | **备注** | | | 引脚名** | NQ引脚号** | | +===============+==============+============+========================+ | SD_CLK | PS_MIO40 | C22 | SD时钟信号 | +---------------+--------------+------------+------------------------+ | SD_CMD | PS_MIO41 | C19 | SD命令信号 | +---------------+--------------+------------+------------------------+ | SD_D0 | PS_MIO42 | F17 | SD数据Data0 | +---------------+--------------+------------+------------------------+ | SD_D1 | PS_MIO43 | D18 | SD数据Data1 | +---------------+--------------+------------+------------------------+ | SD_D2 | PS_MIO44 | E18 | SD数据Data2 | +---------------+--------------+------------+------------------------+ | SD_D3 | PS_MIO45 | C18 | SD数据Data3 | +---------------+--------------+------------+------------------------+ 40针扩展口 ~~~~~~~~~~ 底板预留了1个2.54mm标准间距的40针的扩展口J33，用于连接黑金的各个模块或者用户自己设计的外面电路，扩展口有40个信号，其中，5V电源1路，3.3V电源2路，地3路，IO口34路。扩展口的IO连接的ZYNQ芯片BANK12的IO上，默认为3.3V，切勿直接跟外面的5V设备连接，以免烧坏ZYNQ7000芯片。如果要接5V设备，需要接电平转换芯片。 扩展口(J33)的电路如下图3-10-1所示 .. image:: images/03_media/image32.png 图3-10-1扩展口J33原理图 **J33扩展口ZYNQ的引脚分配如下：** +---------+-----------+---------+----------+-------------+-----------+ | **J3 | **信 | **ZYNQ | **J | **信号 | **ZYN | | 3管脚** | 号名称** | 引脚号**| 33管脚** | 名称** | Q引脚号** | | | | | | | | +=========+===========+=========+==========+=============+===========+ | 1 | GND | - | 2 | +5V | - | +---------+-----------+---------+----------+-------------+-----------+ | 3 | IO1_1N | Y11 | 4 | IO1_1P | Y12 | +---------+-----------+---------+----------+-------------+-----------+ | 5 | IO1_2N | AC11 | 6 | IO1_2P | AB12 | +---------+-----------+---------+----------+-------------+-----------+ | 7 | IO1_3N | AA12 | 8 | IO1_3P | AA13 | +---------+-----------+---------+----------+-------------+-----------+ | 9 | IO1_4N | AF10 | 10 | IO1_4P | AE11 | +---------+-----------+---------+----------+-------------+-----------+ | 11 | IO1_5N | AC13 | 12 | IO1_5P | AD13 | +---------+-----------+---------+----------+-------------+-----------+ | 13 | IO1_6N | Y13 | 14 | IO1_6P | W13 | +---------+-----------+---------+----------+-------------+-----------+ | 15 | IO1_7N | AD11 | 16 | IO1_7P | AC12 | +---------+-----------+---------+----------+-------------+-----------+ | 17 | IO1_8N | AA14 | 18 | IO1_8P | AA15 | +---------+-----------+---------+----------+-------------+-----------+ | 19 | IO1_9N | Y10 | 20 | IO1_9P | AA10 | +---------+-----------+---------+----------+-------------+-----------+ | 21 | IO1_10N | AE15 | 22 | IO1_10P | AE16 | +---------+-----------+---------+----------+-------------+-----------+ | 23 | IO1_11N | W15 | 24 | IO1_11P | W16 | +---------+-----------+---------+----------+-------------+-----------+ | 25 | IO1_12N | AC16 | 26 | IO1_12P | AC17 | +---------+-----------+---------+----------+-------------+-----------+ | 27 | IO1_13N | AD10 | 28 | IO1_13P | AE10 | +---------+-----------+---------+----------+-------------+-----------+ | 29 | IO1_14N | AE12 | 30 | IO1_14P | AF12 | +---------+-----------+---------+----------+-------------+-----------+ | 31 | IO1_15N | AB10 | 32 | IO1_15P | AB11 | +---------+-----------+---------+----------+-------------+-----------+ | 33 | IO1_16N | AB16 | 34 | IO1_16P | AB17 | +---------+-----------+---------+----------+-------------+-----------+ | 35 | IO1_17N | AA17 | 36 | IO1_17P | Y17 | +---------+-----------+---------+----------+-------------+-----------+ | 37 | GND | - | 38 | GND | - | +---------+-----------+---------+----------+-------------+-----------+ | 39 | +3.3V | - | 40 | +3.3V | - | +---------+-----------+---------+----------+-------------+-----------+ LED灯 ~~~~~ AX7Z035底板上有7个发光二极管LED, 1个电源指示灯； 2个串口通信指示灯， 4个PL控制指示灯。当开发板上电后电源指示灯会亮起；4个LED灯连接到PL的IO上，用户可以通过程序来控制亮和灭，当连接用户LED灯的IO电压为低时，用户LED灯熄灭，当连接IO电压为高时，用户LED会被点亮。用户LED灯硬件连接的示意图如图3-11-1所示： .. image:: images/03_media/image33.png 图3-11-1用户LED灯硬件连接示意图 **用户LED灯的引脚分配** +--------------+------------------+--------------+-------------------+ | **信号名称** | **ZYNQ引脚名** | **ZYNQ | **备注** | | | | 管脚号** | | +==============+==================+==============+===================+ | PL_LED1 | B12_L14_P | AB15 | 用户PL LED1灯 | +--------------+------------------+--------------+-------------------+ | PL_LED2 | B12_L14_N | AB14 | 用户PL LED2灯 | +--------------+------------------+--------------+-------------------+ | PL_LED3 | B12_L10_N | AF13 | 用户PL LED3灯 | +--------------+------------------+--------------+-------------------+ | PL_LED4 | B12_L10_P | AE13 | 用户PL LED4灯 | +--------------+------------------+--------------+-------------------+ 复位按键和用户按键 ~~~~~~~~~~~~~~~~~~ AX7Z035底板上有1个复位按键RESET和4个用户按键。复位信号连接到核心板的复位芯片输入，用户可以使用这个复位按键来复位ZYNQ系统，另外4个按键是连接到PL的IO上。复位按键和用户按键都是低电平有效，复位按键和用户按键的连接示意图如图3-12-1所示： .. image:: images/03_media/image34.png 图3-12-1 复位按键连接示意图 **按键的ZYNQ管脚分配** +--------------+------------------+------------+----------------------+ | **信号名称** | **ZYNQ引脚名** | **ZY | **备注** | | | | NQ引脚号** | | +==============+==================+============+======================+ | PL_KEY1 | B12_L16_P | AF15 | PL按键1输入 | +--------------+------------------+------------+----------------------+ | PL_KEY2 | B12_L16_N | AF14 | PL按键2输入 | +--------------+------------------+------------+----------------------+ | PL_KEY3 | B12_L13_N | AD14 | PL按键3输入 | +--------------+------------------+------------+----------------------+ | PL_KEY4 | B12_L13_P | AC14 | PL按键4输入 | +--------------+------------------+------------+----------------------+ JTAG调试口 ~~~~~~~~~~ 在AX7Z035底板上预留了一个JTAG接口，用于下载ZYNQ程序或者固化程序到FLASH。为了带电插拔造成对ZYNQ芯片的损坏，我们在JTAG信号上添加了保护二极管来保证信号的电压在FPGA接受的范围，避免ZYNQ芯片的损坏。 .. image:: images/03_media/image35.png 图3-13-1 原理图中JTAG接口部分 下图为扩展板上JTAG接口实物图，用户可以通过我们提供的USB下载器连接PC和JTAG接口进行ZYNQ的系统调试 JTAG线插拔的时候注意不要热插拔。 拨码开关配置 ~~~~~~~~~~~~ 开发板上有一个2位的拨码开关SW1用来配置ZYNQ系统的启动模式。AX7Z035系统开发平台支持三种启动模式。这三种启动模式分别是JTAG调试模式, QSPI FLASH和SD卡启动模式。XC7Z035芯片上电后会检测响应MIO口（MIO5和MIO4）的电平来决定那种启动模式。用户可以通过核心板上的拨码开关SW1来选择不同的启动模式。SW1启动模式配置如下表3-14-1所示。 +--------------------+----------------+----------------+---------------+ | **SW1** | **拨码 | **M | **启动模式** | | | 位置（1，2）** | IO5,MIO4电平** | | +====================+================+================+===============+ | |image2| | ON、ON | 0、0 | JTAG | +--------------------+----------------+----------------+---------------+ | | OFF、OFF | 1、1 | SD卡 | +--------------------+----------------+----------------+---------------+ | | OFF、ON | 1、0 | QSPI FLASH | +--------------------+----------------+----------------+---------------+ 表3-14-1 SW1启动模式配置 电源 ~~~~ 开发板的电源输入电压为DC12V，可以通过PCIE插槽或者外接+12V电源给板子供电。外接电源供电时请使用开发板自带的电源,不要用其他规格的电源，以免损坏开发板。底板上通过1路DC/DC电源芯片TPS54620和3路DC/DC电源芯片MP1482转换成+5V，+1.2V, +3.3V和1.8V四路电源。因为+5V电源通过板间连接器给核心板供电，所以DCDC电源的电流输出为6A，其它3路电源电流输出为2A。 板上的电源设计示意图如下图3-15-1所示: .. image:: images/03_media/image37.png 图3-15-1原理图中电源接口部分 各个电源分配的功能如下表所示： +----------------------+-----------------------------------------------+ | **电源** | **功能** | +======================+===============================================+ | +5.0V | 核心板供电电源 | +----------------------+-----------------------------------------------+ | +1.8V | 以太网，HDMI，USB | +----------------------+-----------------------------------------------+ | +3.3V | 以太网，HDMI，USB，SD，光纤，PCIE | +----------------------+-----------------------------------------------+ | +1.2V | 以太网 | +----------------------+-----------------------------------------------+ 风扇 ~~~~ 因为ZYNQ7035正常工作时会产生大量的热量，我们在板上为芯片增加了一个散热片和风扇，防止芯片过热。风扇的控制由ZYNQ芯片来控制，控制管脚连接到BANK12的IO上，如果IO电平输出为低，MOSFET管导通，风扇工作，如果IO电平输出为高，风扇停止。板上的风扇设计图如下图3-16-1所示: .. image:: images/03_media/image38.png 图3-16-1 开发板原理图中风扇设计 风扇出厂前已经用螺丝固定在开发板上，风扇的电源连接到了J25的插座上，红色的为正极，黑色的为负极。 结构尺寸图 ~~~~~~~~~~ .. image:: images/03_media/image39.png 图3-17-1正面图（Top View） .. |image1| image:: images/03_media/image24.png .. |image2| image:: images/03_media/image36.png