Research and Application of HPI Interface Technique Based on TMS320C54x
Wei Jincheng · Modern Electronics Technique · 2008
The Host Port Interface(HPI)is a 8-bit parallel port used to interface a host processor or device to the Texas Instruments(TI) fixed-point Digital Signal Processor(DSP) TMS320C54x.The HPI enables the double-processor system(between DSP and Host microcontrollers) to process high-speed and parallel data exchange.In the paper,the structure and principle of HPI are introduced in detail,then taking TMS320C5410 and ADuc848 double-processor system as example,it introduces the HPI′s software,hardware application and superiority in double-processor system.Taking the SCM ADuc848 and the TMS320C5410 double-processor system as example,the advantages of HPI-8 design in double-processor system from several aspects are discussed:the peripheral circuit of the interface is simple which hardly needs any additional logic circuit,high speed data transmission,simple software design,credible communications etc.The principle diagram of the hardware design and the frame of the software design are given in the paper,and the credibility of the system design is proved through actual test.