带自举功能的DSP外设扩展模块设计

TMS320Vc54x系列DSP（Digital Signalprocessor）没有AD、DA等常用外设且缺少程序存储器，故其应用系统通常需进行外设扩展模块与自举模块设计，针对传统解决方案将两个模块分别实现存在扩展器件多、系统集成度不高等问题，本文提出了一种带自举功能的DSP外设扩展模块。该模块通过将C8051F330单片机作为唯一的外扩芯片，利用其片内FLASH存储DSP自举程序代码，并采用其片上AD、DA实现DSP的外设扩展。实验表明本文提出的DSP外设扩展模块合理可行。

DSP peripheral extension module with bootloader function

TMS320VC54x series Digital Signal Processors （DSP） have no common peripherals, such as analog to digital convert （AD）, digital to analog convert （DA） and lack of program memories. Therefore, peripheral expansion modules and bootloader module should be considered and designed in application system of this serie DSP. The traditional solution which has completed the modules respectively has the disadvantages of more expansion devices, lower degree of system integration. To overcome the problems mentioned in traditional solution, this paper proposed peripheral expansion module for DSP with the bootloader function. C8051F330 is the only outside chip which will be used in this module. Its internal FLASH is used to store bootloader program code of DSP and its on-chip AD and DA are used to realize DSP peripheral extension. Experiments show that the proposed DSP peripheral extension module is reasonable.