27. Module: SPI

When the SPI module operates in Host mode (MSTEN = 1) with the peripheral bus selected as the clock source (MCLKEN = 0), the module may exhibit unreliable operation. Internal synchronization timing cannot be guaranteed across all operating conditions. This issue occurs regardless of SPI clock polarity/phase settings (CKP, CKE, SMP bits) and affects both dedicated SPI pins and remappable (PPS) pins. Client mode operation is not affected.

Configure the SPI module to use the dedicated clock generator (CLKGENx) as the clock source by setting SPIxCON1.MCLKEN = 1 when the module is used in Host mode (MSTEN = 1).