taxi/src/eth/example/AC701/fpga

Taxi Example Design for AC701

Introduction

This example design targets the Xilinx AC701 FPGA board.

The design places looped-back MACs on both the BASE-T port and the SFP+ cage, as well as XFCP on the USB UART for monitoring and control.

• USB UART
  • XFCP (921600 baud)
• RJ-45 Ethernet port with Marvell 88E1116 PHY
  • Looped-back MAC via RGMII
• SFP+ cage
  • Looped-back 1000BASE-X via Xilinx PCS/PMA core and GTX transceiver

Board details

• FPGA: XC7A200T-2FBG676C
• USB UART: Silicon Labs CP2103
• 1000BASE-T PHY: Marvell 88E1116 via RGMII
• 1000BASE-X PHY: Xilinx PCS/PMA core via GTX transceiver

Licensing

• Toolchain
  • Vivado Enterprise (requires license)
• IP
  • No licensed vendor IP or 3rd party IP

How to build

Run make in the appropriate fpga* subdirectory to build the bitstream. Ensure that the Xilinx Vivado toolchain components are in PATH.

How to test

Run make program to program the board with Vivado.

To test the looped-back MAC, it is recommended to use a network tester like the Viavi T-BERD 5800 that supports basic layer 2 tests with a loopback. Do not connect the looped-back MAC to a network as the reflected packets may cause problems.