片上网络GALS接口设计

本文提出了一种基于握手协议的GALS接口设计方法。该接口采用异步FIFO作为输入缓冲区，有效降低了数据传输延迟；采用环形缓冲的概念来管理缓冲区，使接口具有了可扩展性。FPGA验证结果表明，该接口保证了适配单元与网络路由之间完成准确的异步传输，4通道的接口共占用了405个ALUT（Adaptive Look-Up Table）和支持211 MHz的时钟频率。

Design of GALS Interface for Network-on-Chip

This paper proposes a design method for GALS （Globally Asynchronous and Locally Synchronous ） interface based on handshake protocol. The delay of data transfer is reduced by using asynchronous FIFOs as input buffers. The interface also uses concept of circular buffer to manage multi-buffers, so that the interface is scalable. The synthesis and simulation in FPGA show that our GALS can provide reliable asynchronous communication services, an interface with 4 channels required 405 ALUT （ Adaptive Look-Up Table ） and ran at 211MHz.