摘要
在一些脱机运行的DSP应用中,通常需要在系统加电后自行将代码从外扩存储器中装载到内部DSP中去执行,实现此种功能的系统称为引导装载系统.这是DSP开发中的重点和难点之一,关系到系统的可靠性和处理速度.在分析TI公司TMS320C6713 DSP的引导加载过程及原理基础上,设计并实现了主机利用仿真器通过JTAG口实现对DSP外部配置的FLASH存储器的在线编程,并以TI公司的DSP结合ST公司的FLASH存储器(SST39VF800A)为例,叙述了从FLASH引导程序的实现方法,并针对其中重要的命令文件和用户引导程序,给出了相应的示例文件和部分源代码.
Bootload system is needed in some DSP off-line systems so that the systems could load the codes from external storage automatically after power on. The quality of bootload system is related to the reliability and the operating speed of the system. The booting process of TMS320C6713 DSP was analyzed, On that basis, an on-line programming for FLASH memory was proposed to complete the external configuration of DSP via JTAG port by using the simulator in host computer. The programming process of FLASH booting program in SST39VF800A （FLASH ROM） chip was given and some major source codes were presented.
出处
《应用科技》
CAS
2008年第8期48-51,共4页
Applied Science and Technology
