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axi-nodes

This repository provide Chisel3 libraries to creation AXI modules. With this library, you can easily develop AXI modules in Chisel3.

The purpose of writing this library is that I want to quickly create AXI peripherals during the Chisel learning process. At first I thought of using Rocket-Chip's AMBA library, but realized that it is difficult to design standalone AXI peripherals with this library.

Features

  • AXI core is designed to be able to provide %100 throughput on both read and write channel. In my first design, slave core was not working with full throughput. But after some time on Daniel E Gisselquist's blog, I realized that we can design better. Since skid buffer is used in this version, the slave core can run at full throughput.

  • Automatic name generation. Axi signal names are automatically generated in accordance with Xilinx's naming.

  • Well documented.

  • For now, AXI4-FULL not yet been developed

Examples

SimpleGpioController

A simple AXI GPIO Controller with 8-bit input and output ports

MasterMemRW

This is an AXI4-Lite Master node example. It writes values from 0 to 10 to sequential addresses. It then reads back these written values. You can test this module with Xilinx AXI slave VIP with memory model.

SimpleAXIMultiplier

Multiplier peripheral. It has AXI4-Lite slave and master node. The Slave node receives multiplier, multiplicand and control signal from outside. Then it calculates product.Master node gets this product and transfer it to outside.

AXIStreamFifo

In this example, an AXI Stream fifo has been created.This fifo receives data from slave interface. When it receives LAST signal, it sends buffered data from the master interface.

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