Due to lack of data and address parallel bus on TMS320F2808, the two DSPexchange data by means of communication through SPI interface.
由于采用的TMS320F 2808不具备数据总线与地址总线，两个DSP之间采用SPI串行通讯的方式实现数据交换。
This interface can be used to data exchange with peripheral apparatus for processor and controller which have not SPI interface function.
通过该方法的介绍，使得那些没有SPI接口功能的处理器和控制器能够扩展SPI接口，以便同外部设备进行数据交换。
MPC850 SPI interface drive is an example of procedures, but also practical application under specific circumstances and conditions changed.
MPC850的SPI接口的驱动，是一个范例程序，实际应用中还要根据具体环境和条件加以修改。
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