【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。更多还原

【Abstract】 TL16C550 is an asynchronous communication element 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.更多还原