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RV901T Receiver Card

The Linsn RV901T HUB75 LED driver card has a Spartan 6 LX16 FPGA.

RV901T Front View

The Linsn RV901T contains a user-reprogrammable Spartan 6 FPGA (LX16, 14k 'logic cells', 9112 LUTs) and 2x GbE, it has potential to be usable as a general purpose FPGA development board, an interface card for various purposes, or a logic analyzer.

Documentation

The Improved JTAG Connector uses the JP3 header in a different purpose than originally planned, providing a stable and solid connection for the JTAG cable, as well less skills to solder and better electrical interface, as long there are lots of ground connections alredy available in the connector.

Hardware

There is hardware documentation available, which includes WIP information about mapping from the FPGA balls / IO into various peripherals on board and connectors.

You can buy these boards from eBay, Aliexpress, Taobao. As of today (2019/01/26), these boards are around €18 (including S&H) on Aliexpress.

Status

  • Hardware RE:
    • Clocking
    • LED and Button
    • PHY0
    • PHY1 - partially
    • J600
    • J601
    • JP5 - SPI flash connector?
    • JP4
    • JP3 - Improved JTAG Connector
    • JP2
    • U100 - SDRAM
  • Migen integration:
    • Platform Defintion (platform.py)
  • LiteX integration
    • Sample project (sdram_test.py)
  • LiteEth integration:
    • Sample project (rgmii_test.py)

Acknowledgments

Thanks to Lucy Fauth and Jana Marie Hemsing for donating two boards and partially tracing out the PHYs, and delayering the PCB.

Thanks to carrotIndustries for assisting with the preliminary RE process at Glühweinprogrammiernacht 2018.

Thanks to enjoy-digital for reverse engineering the RGMII interface, implementing an S6 RGMII PHY interface, and the sample target files.

Thanks to jeanthom for reverse engineering the SDRAM interface.

Thanks for informatic for reverse engineering the HUB75B hat.

License

CC0 - to the extent possible under law, the person who associated CC0 with this work has waived all copyright and related or neighboring rights to this work.