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MCU-PLUS-SDK-AM273X: MSS_SPIB mode setting.

Lin Li
Intellectual 260 points

Part Number: MCU-PLUS-SDK-AM273X
Other Parts Discussed in Thread: LMX2595

Tool/software:

Hello Support team,

I'm working on the AM273x EVM with MCU+ SDK. It seems to me that the MSS_SPIB mode setting in the example.syscfg of the sample mibspi_loopback project does not match with the actual SPI signals on J7 of EVM. I verified this with Saleae Logic 2.

For example, LMX2595 chipset needs SPI mode 0 (CPOL = 0, CPHA = 0), however to make it works in the AM273x EVM MCU+ SDK sample code mibspi_loopback, I have to set SPI mode to 1 (CPOL = 0, CPHA = 1). And for AD7380-4 chipset, the SPI mode is 2 (CPOL = 1, CPHA = 0), in the AM273x .syscfg file I have to set to mode 3 (CPOL = 1, CPHA = 1).

Is there any reason for that? Or any suggestion?

Best regards,

Lin