【摘要】 在由TI公司TMS320VC33构成的DSP应用系统中,为了充分发挥DSP外部扩展的存储器资源的效能,介绍了通过JTAG口对DSP外部FLASH存储器实现在系统编程的方法。同时给出了示例源程序,并讨论2种不同的DSP系统上电复位实现并行自举引导的实用方法。2种方案具有较大的灵活性和实用性,经过多次试验均在车内通信系统用户板上得以验证。更多还原

【Abstract】 To make full use of the efficiency of the patulous memory resources outside the DSP,the method of in-system programming of FLASH memory based on JTAG is introduced on TMS320VC33 application system.Example is also demonstrated,and two practical techniques,which meant to realize TMS320VC33 parallel bootstrap after DSP system′s powerup reset action are discussed detailedly.Each of them has his strong point.Flexibility and practicability are obvious.Those techniques are well validated on the in-car communication system.更多还原