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TMS320F28069: Piccolo系列SPI模块为何FIFO深度要简配到4呢?

Part Number: TMS320F28069
Other Parts Discussed in Thread: C2000WARE

最近使用28069的SPI,发现它的FIFO深度只有4,而像2808/2812/28335这些器件他们的SPI的FIFO深度都是16,对比了下发现28035/28027/28069这些Piccolo器件的SPI的FIFO都简配到了深度4.

对于Piccolo这些小封装芯片,SPI是很重要的高速接口,不知道为何要把FIFO深度简配到4.另外,TI官网似乎找不到传统的Delfino、Piccolo器件网页信息了,是以后要放弃这些产品了吗?