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[参考译文] ADC12QJ1600EVM：EVM 的 SPI 配置可切换同步信号

admin
Guru**** 2380860 points
请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1077380/adc12qj1600evm-spi-config-for-evm-yields-toggling-sync-signal

部件号：ADC12QJ1600EVM

使用 ADCxxQJ1600EVM 软件 GUI，我提取了 Python SPI 配置，该配置显示了设备的命令和订购情况。 根据软件配置，我建立了 JESD204b 链接；但是，同步引脚似乎正在切换。

详细信息：

模式：JMODE0

采样频率：1GHz

FPGA：Xilinx KU060

Xilinx IP：JESD204 PHY，JESD204 RX (https://www.xilinx.com/support/documentation/ip_documentation/jesd204/v7_2/pg066-jesd204.pdf)

  • 0
    TI__Guru**** 2380860 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好，海迪，

    JESD 同步信号切换的原因有很多。  

    1. ADC 和 FPGA 之间的信号完整性问题。  

    2. K 参数编程错误。

    3. FPGA GBT 时钟不稳定。  

    请您提供一些有关该问题的更多信息。 可以尝试 ADC GUI 对 ADC 进行编程，看看是否看到不同的结果？

    此致，

    Neeraj   

  • 0
    TI__Guru**** 2380860 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    实际上，我也使用 GUI 本身对 EVM 进行了编程，结果也是如此。 Xilinx IP 没有太多参数可供设置：F，K 和一些与 SYSREF 相关的框。 我已经检查过这些框几次了，但我可以再次查看它们。

  • 0
    TI__Guru**** 2380860 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好，海迪，

    请通过发送 GUI 屏幕截图来共享 GUI 设置，其中显示了用于对 ADC 进行编程的设置。  

    此致，

    Neeraj  

  • 0
    TI__Guru**** 2380860 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    我附加了 ADCQJxx1600 EVM 软件的图像(我在模拟模式下运行该程序。)。 我还附加了软件发布的 SPI 命令的 python 日志。 

    GUI_Module=__import__('ADC12QJ1600 EVM GUI')

GUI=GUI_Module.Device_GUI("ADC12QJ1600 EVM GUI.exe",6640.000000)
GUI.write_register("OSC_ENA","ENA OR DISABLE OSC",0x0)
GUI.write_register("GBT_SEL","SEL_GTB_CLK_SOURCE",0x1)
GUI.write_register("LMK04828","x000",0x80)
GUI.write_register("LMK04828","x000",0x0)
GUI.write_register("LMK04828","x002",0x0)
GUI.write_register("LMK04828","x100",0x1)
GUI.write_register("LMK04828","x101",0x55)
GUI.write_register("LMK04828","x103",0x2)
GUI.write_register("LMK04828","x104",0x20)
GUI.write_register("LMK04828","x105",0x0)
GUI.write_register("LMK04828","x106",0xF0)
GUI.write_register("LMK04828","x107",0x6)
GUI.write_register("LMK04828","x108",0x1)
GUI.write_register("LMK04828","x109",0x55)
GUI.write_register("LMK04828","x10B",0x0)
GUI.write_register("LMK04828","x10C",0x22)
GUI.write_register("LMK04828","x10D",0x0)
GUI.write_register("LMK04828","x10E",0xF9)
GUI.write_register("LMK04828","0x10F",0x0)
GUI.write_register("LMK04828","x110",0x5)
GUI.write_register("LMK04828","x111",0x55)
GUI.write_register("LMK04828","x113",0x0)
GUI.write_register("LMK04828","x114",0x2)
GUI.write_register("LMK04828","x115",0x0)
GUI.write_register("LMK04828","x116",0xF1)
GUI.write_register("LMK04828","x117",0x1)
GUI.write_register("LMK04828","x118",0x1)
GUI.write_register("LMK04828","x119",0x55)
GUI.write_register("LMK04828","x11B",0x2)
GUI.write_register("LMK04828","x11C",0x2)
GUI.write_register("LMK04828","x11D",0x0)
GUI.write_register("LMK04828","x11E",0xF9)
GUI.write_register("LMK04828","x11F",0x1)
GUI.write_register("LMK04828","x120",0x5)
GUI.write_register("LMK04828","x121",0x55)
GUI.write_register("LMK04828","x123",0x0)
GUI.write_register("LMK04828","x124",0x22)
GUI.write_register("LMK04828","x125",0x0)
GUI.write_register("LMK04828","x126",0xF1)
GUI.write_register("LMK04828","x127",0x1)
GUI.write_register("LMK04828","x128",0x1)
GUI.write_register("LMK04828","x129",0x55)
GUI.write_register("LMK04828","x12B",0x2)
GUI.write_register("LMK04828","x12C",0x22)
GUI.write_register("LMK04828","x12D",0x0)
GUI.write_register("LMK04828","x12E",0xF0)
GUI.write_register("LMK04828","x12F",0x10)
GUI.write_register("LMK04828","x130",0x1)
GUI.write_register("LMK04828","x131",0x55)
GUI.write_register("LMK04828","x133",0x2)
GUI.write_register("LMK04828","x134",0x22)
GUI.write_register("LMK04828","x135",0x0)
GUI.write_register("LMK04828","x136",0xF8)
GUI.write_register("LMK04828","x137",0x1)
GUI.write_register("LMK04828","x138",0x45)
GUI.write_register("LMK04828","x139",0x3)
GUI.write_register("LMK04828","x13A",0x0)
GUI.write_register("LMK04828","x13B",0xA0)
GUI.write_register("LMK04828","x13C",0x0)
GUI.write_register("LMK04828","x13D",0x8)
GUI.write_register("LMK04828","x13E",0x3)
GUI.write_register("LMK04828","x13F",0x0)
GUI.write_register("LMK04828","x140",0x1)
GUI.write_register("LMK04828","x141",0x0)
GUI.write_register("LMK04828","x142",0x8)
GUI.write_register("LMK04828","x143",0x32)
GUI.write_register("LMK04828","x144",0x87)
GUI.write_register("LMK04828","x145",0x0)
GUI.write_register("LMK04828","x146",0x18)
GUI.write_register("LMK04828","x147",0x2)
GUI.write_register("LMK04828","x148",0x2)
GUI.write_register("LMK04828","x149",0x2)
GUI.write_register("LMK04828","x14A",0x2)
GUI.write_register("LMK04828","x14B",0x2)
GUI.write_register("LMK04828","x14C",0x0)
GUI.write_register("LMK04828","x14D",0x0)
GUI.write_register("LMK04828","x14E",0x0)
GUI.write_register("LMK04828","x14F",0x7F)
GUI.write_register("LMK04828","x150",0x1)
GUI.write_register("LMK04828","x151",0x2)
GUI.write_register("LMK04828","x152",0x0)
GUI.write_register("LMK04828","x153",0x0)
GUI.write_register("LMK04828","x154",0xC)
GUI.write_register("LMK04828","x155",0x0)
GUI.write_register("LMK04828","x156",0xC)
GUI.write_register("LMK04828","x157",0x0)
GUI.write_register("LMK04828","x158",0x78)
GUI.write_register("LMK04828","x159",0x0)
GUI.write_register("LMK04828","x15A",0x78)
GUI.write_register("LMK04828","x15B",0xD4)
GUI.write_register("LMK04828","x15C",0x20)
GUI.write_register("LMK04828","x15D",0x0)
GUI.write_register("LMK04828","x15E",0x0)
GUI.write_register("LMK04828","x15F",0xB)
GUI.write_register("LMK04828","x160",0x0)
GUI.write_register("LMK04828","x161",0x2)
GUI.write_register("LMK04828","x162",0x44)
GUI.write_register("LMK04828","x163",0x0)
GUI.write_register("LMK04828","x164",0x0)
GUI.write_register("LMK04828","x165",0xC)
GUI.write_register("LMK04828","x17C",0x15)
GUI.write_register("LMK04828","x17D",0x33)
GUI.write_register("LMK04828","x166",0x0)
GUI.write_register("LMK04828","x167",0x0)
GUI.write_register("LMK04828","x168",0x1)
GUI.write_register("LMK04828","x169",0x59)
GUI.write_register("LMK04828","x16A",0x20)
GUI.write_register("LMK04828","x16B",0x0)
GUI.write_register("LMK04828","x16C",0x0)
GUI.write_register("LMK04828","x16D",0x0)
GUI.write_register("LMK04828","x16E",0x4)
GUI.write_register("LMK04828","x139",0x0)
GUI.write_register("LMK04828","x143",0x11)
GUI.write_register("LMK04828","x140",0x0)
GUI.write_register("LMK04828","x144",0x74)
GUI.write_register("LMK04828","x143",0x11)
GUI.write_register("LMK04828","x143",0x31)
GUI.write_register("LMK04828","x143",0x11)
GUI.write_register("LMK04828","x144",0xFF)
GUI.write_register("LMK04828","x139",0x3)
GUI.write_register("LMK04828","x14A",0x6)
-- 0x00
GUI.write_register("ADC12QJxx00","CONFIG_A",0xB0)
-- 0x2B
GUI.write_register("ADC12QJxx00","CLK_CTRL2",0x15)
-- 0x200
GUI.write_register("ADC12QJxx00","JESD_EN",0x0)
-- 0x61
GUI.write_register("ADC12QJxx00","CAL_EN",0x0)
-- 0x201
GUI.write_register("ADC12QJxx00","JMODE",0x0)
-- 0x202
GUI.write_register("ADC12QJxx00","KM1",0x3)
-- 0x204
GUI.write_register("ADC12QJxx00","JCTRL",0x1)
-- 0x213
GUI.write_register("ADC12QJxx00","OVR_CFG",0xF)
-- 0x61
GUI.write_register("ADC12QJxx00","CAL_EN",0x1)
-- 0x200
GUI.write_register("ADC12QJxx00","JESD_EN",0x1)
-- 0x6C
GUI.write_register("ADC12QJxx00","CAL_SOFT_TRIG",0x0)
-- 0x6C
GUI.write_register("ADC12QJxx00","CAL_SOFT_TRIG",0x1)
GUI.__del__()

    最后，我验证了 Xilinx JESD204b IP 中的 F (8)和 K (4)参数。

  • 0
    TI__Guru**** 2380860 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好，海迪，

    请确保何时将时钟应用于 ADC，且 ADC 已使用 GUI 进行编程。

    单击以下按钮以确保 SERDES PLL 锁定指示器已打开。 这将告诉我们时钟正在获得 ADC。  

    此致，

    Neeraj