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TMS570LS3137: Transmit data more than 128 words using MibSPI and TG

Part Number: TMS570LS3137
Other Parts Discussed in Thread: TMS570LC4357

We are using TMS570ls3137 controller in our project and there is a requirement that SPI has to write/read in full duplex mode. As per data sheet the SPI RAM has only 128 words. If we need to transmit/receive more than that in a single transaction how to achieve it.

1. is it possible to extend the buffer beyond 128 words. 

2. If we use DMA at achieve it, what is the configuration of SPI/DMA?