异步FIFO verilog代码

airsmiler · 发表于 2012-5-17 15:01:17

速度最高能有多快？

hysterialee · 发表于 2012-5-25 00:28:46

看看谢啦·

yyllu · 发表于 2012-6-12 16:46:02

I learn the aysnchrous FIFO verilog. But i have a question about the full/empty flag code problem. i don't understand the condition of the full flag. why? Can you simulate the code? the code is as follows:
always @(wr_addr_gray or rd_addr_gray_wsyn2)
begin
if((wr_addr_gray[ADDR_WIDTH]!=rd_addr_gray_wsyn2[ADDR_WIDTH]) &&
   (wr_addr_gray[ADDR_WIDTH-1]!=rd_addr_gray_wsyn2[ADDR_WIDTH-1]) &&
   (wr_addr_gray[ADDR_WIDTH-2:0]==rd_addr_gray_wsyn2[ADDR_WIDTH-2:0]))
      full = 1'b1;
else
      full = 1'b0;
end