基于TL16C550和MAX3160的多协议异步串口设计  

Design of Multiprotocol UART Based on TLC16C550 and MAX3160

作　　者：马云峰[1] 周百令[1] 万振刚[1] 黄丽斌[1] 

机构地区：[1]东南大学仪器科学与工程系,江苏南京210096

出　　处：《仪表技术与传感器》2005年第9期44-46,共3页Instrument Technique and Sensor

摘　　要：TL16C550是带自动流控制的通用异步收发器,它可以工作在FIFO模式,通过接收和发送寄存器的缓冲,来减少CPU的软件开销以提高系统的效率。MAX3160是可编程多协议收发器件,通过对其管脚的编程控制可实现双收/双发RS-232接口或单路RS-485/422收发功能。采用TL16C550和MAX3160设计实现了RS-232/485/422接口,以TMS320VC33数字信号处理器为例介绍了DSP控制该串口的硬件电路和C语言编程的相关程序。TL16C550 is an asynchronous communication dement with autoflow control. It can be placed in an alternate FIFO mode. This relieves the CPU of excessive software overhead by buffering received and transmitted characters to increase system efficiency. The MAX3160 is programmable RS - 232/485/422 multiprotocol transceiver and is pin programmable as a 2Tx/2Rx RS - 232 interface or a single RS - 485/422 transceiver. RS - 232/485/422 interface has been designed by using TL16C550 and MAX3160. Taking TMS320VC33 as an example,the correlative hardware circuit diagram and C language programs to control this UART using DSP have been introduced.

关 键 词：异步串行口 多协议收发器 DSP 

分 类 号：TP36[自动化与计算机技术—计算机系统结构]