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taxi/example/HTG940/fpga/README.md
2025-03-20 17:32:31 -07:00

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# Taxi Example Design for HTG-940
## Introduction
This example design targets the HiTech Global HTG-940 FPGA board.
The design places a looped-back MAC on the BASE-T port, as well as a looped-back UART on on the USB UART connection.
* USB UART
* Looped-back UART
* RJ-45 Ethernet ports with TI DP83867IRPAP PHY
* Looped-back MAC via RGMII
## Board details
* FPGA: xcvu9p-flgb2104-2-e
* USB UART: Silicon Labs CP2103
* 1000BASE-T PHY: TI DP83867IRPAP via RGMII
## 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 UART, use any serial terminal software like minicom, screen, etc. The looped-back UART will echo typed text back without modification.
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.