defaulttexhapb / verilog-ft245

Verilog FT245 to AXI stream interface

Verilog FT245 Readme

For more information and updates: http://alexforencich.com/wiki/en/verilog/ft245/start

GitHub repository: https://github.com/alexforencich/verilog-ft245

Introduction

This is a basic FTDI FT245 USB FIFO to AXI Stream IP core, written in Verilog with MyHDL testbenches.

Documentation

The main code for the core exists in the rtl subdirectory. axis_ft245.v contains the entire implementation.

Source Files

axis_ft245.v           : FTDI FT245 to AXI stream bridge

AXI Stream Interface Example

two byte transfer with sink pause after each byte

          __    __    __    __    __    __    __    __    __
clk    __/  \__/  \__/  \__/  \__/  \__/  \__/  \__/  \__/  \__
                _____ _________________
tdata  XXXXXXXXX_D0__X_D1______________XXXXXXXXXXXXXXXXXXXXXXXX
                _______________________
tvalid ________/                       \_______________________
       ______________             _____             ___________
tready               \___________/     \___________/

Testing

Running the included testbenches requires MyHDL and Icarus Verilog. Make sure that myhdl.vpi is installed properly for cosimulation to work correctly. The testbenches can be run with a Python test runner like nose or py.test, or the individual test scripts can be run with python directly.

Testbench Files

tb/axis_ep.py        : MyHDL AXI Stream endpoints
tb/ft245.py          : MyHDL FT245 model