SLAZ709A October 2017 – June 2025 MSP432E401Y , MSP432E411Y
SSI slave in bi and quad mode swaps XDAT0 and XDAT1
The SSI Slave when in Bi or Quad Mode sends the data on XDAT0 to XDAT1 line and XDAT1 to XDAT0 line.
When transmitting the data from SSI Slave in Bi and Quad Mode the CPU must swap the bits when writing to the Data Register SSIDR for the correct bit to be transmitted. When using uDMA CPU must write the swapped bits in the uDMA’s source buffer.