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Controller mode of SPI and Register-Based Linear-Buffer Stop Flow Mode of DMA

Category: Datasheet/Specs
Product Number: ADSP2156x and ADSP2159x

adsp-2156x_hwr and adsp-2159x-sc591-592-594-hrm.pdf don't explain everything about controller mode of SPI and Register-Based Linear-Buffer Stop Flow Mode of DMA.

For example, SPI transmit start only if TDR of SPI_TXCTL set non zero value.

According adsp-2156x_hwr and adsp-2159x-sc591-592-594-hrm.pdf TDR of SPI_TXCTL is direct the SPI to generate a transmit status interrupt request. But this request direct DMA to start transfer data from DMA to SPI.

I found out it to hack services\pdma and drivers\spi.

Best regards.