TMS320C671X系列DSP的引导程序设计技术

Techniques of bootloader design for TMS320C671X series DSP

TMS320C6000系列DSP的程序上电加载过程比较复杂,为了简化设计,介绍了该系列DSP的一种引导程序的设计技术,即DSP的运行程序存放在外接只读存储器或FLASH中,上电复位后,通过FLASH进行多级引导,DSP程序在内部RAM和外部RAM(SDRAM)中运行。以TMS320C6713为例,对TMS320C671X系列DSP的引导方式和FLASH加载过程进行了说明,然后详细说明了二级引导程序的几种实现方式,提出了一个最易设计和维护的方法:"启动时拷贝表法",实现了"全自动引导"。该技术已经成功应用于某微波测量仪器。

Program loading of TMS320C6000 series DSP after power on is somewhat complex.In order to make it easier,the technique of bootloader design for this series DSP is introduced in this paper.That is,the DSP program is stored in an external ROM or FLASH.After power on reset,it is booting up from FLASH,and running in internal RAM and external RAM（SDRAM）.Firstly,as an example,the booting method of TMS320C671 Xseries DSP and the process of FLASH booting are illuminated.Secondly,some approaches of second booting program are detailed discussed,and an easiest way of design and maintenance is given,that is ＂the booting copy table＂.Thus an automatic boot loading is accomplished.This technique has been used in some microwave measurement instrument.