SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
In controller mode, the interrupt events related to the state of the MCSPI_TX_0/1/2/3 register are TXx_EMPTY and TXx_UNDERFLOW. The interrupt event related to the state of the MCSPI_RX_0/1/2/3 register is RXx_FULL.