【摘要】 介绍了一个数字信号处理器与PC机基于RS-232C总线的串行通信电路,所设计的硬件电路解决了DSP与PC机电平转换的问题,并利用TMS320C203的I/O线作为RS-232C接口的握手信号,使TMS320C203与PC机可以通过标准的RS-232C串行总线进行通信。该电路结构简单,可靠性好,通信速度快,在实际使用中效果良好;它也适用于其它同类似的DSP与PC机串行通信系统。更多还原

【Abstract】 In this paper,a circuit is described to realize serial communication between PC and TMS320C203Digital Signal Processor based on the RS-232C standard serial bus.The interface circuit builds up the handshaking signal by I /O line of DSP and uses minimal components to transform voltage lever between TTL and RS -232C.The serial communication takes advantage of simple structure,high reliability and high speed and proved to be in good condition in application.Also,It is acceptable to other serial communication system between and PC DSP similar to TMS320C203.更多还原