基于McBSP实现DSP与串行Flash之间的接口通讯

Interface Design between the DSP Chip TMS320VC5509 and Serial Flash Based on Mcbsp

利用多通道缓冲串口McBSP0实现了TMS320VC5509 DSP与外部串行Flash之间的SPI通讯。完成了用DSP控制Flash进行在线系统编程。有效地降低了系统设计的复杂性,节省了空间。重点介绍了McBSP与Flash之间串行接口的设计,并介绍了TMS320VC5509串行8位引导装载的实现方法。同时给出用CSL库函数实现McBSP配置的程序。

In order to realize the SPI interface protocol between DSP chip TMS320VC5509 and the external serial Flash, the Muhichannel Buffered Serial Port （McBSP） was adopted. It used the McBSP of TMS320VC5509 as the master of the SPI protocol,and chose the serial Flash AT25F1024 as the slave,The experiment results show that the system achieved the serial communication between DSP and Flash and also reduce its complexity effetively. The configuration of the McBSP with the CSL library functions routines was also given.