PCI9054控制设计Verilog代码ISE仿真

名称：PCI9054控制设计Verilog代码ISE仿真

软件：ISE

语言：Verilog

代码功能：PCI9054控制

FPGA代码Verilog/VHDL代码资源下载：www.hdlcode.com

演示视频：

设计文档：

1.?工程文件

2.?程序文件

3.?程序编译

4.?Testbench

5.?仿真图

部分代码展示:

`timescale?1ns?/?1ps
module?pci9054_lbus(
????input???????????????rst,
????input???????????????lclk,
????
????input???????????????lhold,
????output?reg??????????lholda,
????input???????????????ads_n,
????input???????????????blast_n,
????output?reg??????????ready_n,
????
????input?????[3:0]?????lbe,
????input?????[7:0]?????ld,
????input???????????????lwr_n,
????input?????[31:2]????la
????);
//------------------------------------------------------------------------------//
//parameter
//------------------------------------------------------------------------------//
????parameter???[1:0]???????IDLE????????=?2'd0,//空闲状态
????????????????????????????WAIT????????=?2'd1,//等待状态
????????????????????????????TRANS???????=?2'd2;//数据传输
????????????????????????????
//------------------------------------------------------------------------------//
//wire
//------------------------------------------------------------------------------//
//------------------------------------------------------------------------------//
//reg
//------------------------------------------------------------------------------//
????reg?????[1:0]???????c_s?=?2'd0?,n_s?=?2'd0;
//------------------------------------------------------------------------------//
//main?code
//------------------------------------------------------------------------------//
????//状态机第一段
????always@(posedge?lclk)begin
????????if(rst)
????????????c_s?<=?2'd0;
????????else
????????????c_s?<=?n_s;
????end
????
????//状态机第二段?状态转换
????always@(*)begin
????????case(c_s)
????????????IDLE:
????????????????if(ads_n?==?0)???
????????????????????n_s?=?WAIT;
????????????????else
????????????????????n_s?=?IDLE;
????????????WAIT:
????????????????n_s?=?TRANS;
????????????TRANS:
????????????????if(blast_n?==?0)
????????????????????n_s?=?IDLE;
????????????????else
????????????????????n_s?=?TRANS;
????????????default:n_s?=?IDLE;
????????endcase
????end

点击链接获取代码文件：http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=1148