SLAZ741D March 2023 – August 2025 MSPM0L1105 , MSPM0L1106 , MSPM0L1303 , MSPM0L1304 , MSPM0L1305 , MSPM0L1306 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346
SPI Module
Functional
SPI underflow event can not generate if read/write to TXFIFO happen at the same time for SPI peripheral
When SPH = 0 and device is configured as the SPI peripheral: if there is a write to the TXFIFO WHILE there is a read request, then an underflow event can not be generated as the read/write request is happening simultaneously.
Customer must verify that TXFIFO on peripheral can never be empty when the controller is addressing the peripheral. Additionally, data checking strategies, like CRC, can be used to verify the packets were sent properly.