44.6.9 Loopback Mode

For debug purposes, the I2SC can be configured to loop back the transmitter to the Receiver. Writing a ’1’ to the MR.LOOP bit internally connects DO to DI, so that the transmitted data is also received. Writing a ’0’ to MR.LOOP restores the normal behavior with independent Receiver and Transmitter. As for other changes to the Receiver or Transmitter configuration, the I2SC Receiver and Transmitter must be disabled before writing to MR to update MR.LOOP.