-- Filename ﹕ uart.vhd

-- Author ﹕ZRtech

-- Descr iption ﹕串口接收与发送程序

-- 本模块的功能是验证实现和PC机进行基本的串口通信的功能。需要在PC机上安装一个串口调试工具来验证-- 程序的功能。程序实现了一个收发一帧10个bit（即无奇偶校验位）的串口控制器，10个bit是1位起始位-- 8个数据位，1个结束位。串口的波特律由程序中定义的div_par参数决定，更改该参数可以实现相应的波-- 特率。程序当前设定的div_par 的值是0x145，对应的波特率是9600。用一个8倍波特率的时钟将发送或接-- 受每一位bit的周期时间划分为8个时隙以使通信同步.

-- Called by ﹕Top module

-- Revision History ﹕10-5-20

-- Revision 1.0

-- Company ﹕ ZRtech Technology .Inc

-- Copyright(c) 2010, ZRtech Technology Inc, All right reserved-- Filename: uart.vhd- Author: ZRtech- Descr iption: serial port receive and transmit programs- the function of this module is to verify the basic realization and PC serial communication functions. Need to install one on the PC serial port debugging tool to verify- program function. Program implements a transceiver a 10 bit (ie, no parity bit) serial controller, 10 bit is a start bit- 8 data bits, 1 stop bit. Baud-law by the parameters defined in the program div_par decision to change the parameter can achieve the corresponding wave- special rates. Program is currently set div_par value is 0x145, corresponding to the baud rate is 9600. 8 times the baud rate by a clock to transmit or- by the cycle time of each bit is divided into eight time slots to the communication sync.- Called by: Top module- Revision History :10-5- 20- Revision 1.0- Company: ZRtech Technology. Inc- Copyright (c) 2010, ZRtech Technology Inc, All right reserved