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TMS320C6713B: McBSP模拟SPI作为主设备通讯问题

Part Number: TMS320C6713B

TI的工程师,你们好!

我现在想用Mcbsp当SpI用操作从设备,按照手册要求:In SPI master mode, as well as SPI slave mode, the McBSP requires an FSX/SS edge for each transfer. This means the FSX/SS signal must toggle for each word

实际测量波形发现每传完8bit后FAX(CS)就无效了!因为手册要求在模拟SPI功能时配置为单相帧,且数据单元设置为1.

那么请问:如果链接从设备芯片有时许要求,那么6713通过McBSP模拟的SPI接口能否实现在FSX一次有效区间内,实现30字节左右的发送功能呢?如果可以,如何实现?

谢谢!