28.3.1 Synchronous Host Mode

The following bits are used to configure the EUSART for synchronous host operation:

  • The SYNC bit in the TXxSTA register is set to ‘1’ to configure the EUSART for synchronous operation
  • The CSRC bit in the TXxSTA register is set to ‘1’ to configure the EUSART as the host
  • The SREN bit in the RCxSTA register is set to ‘0’ for transmit; SREN = 1 for receive (recommended setting to receive one byte)
  • The CREN bit in the RCxSTA register is set to ‘0’ for transmit; CREN = 1 to receive continuously
  • The SPEN bit in the RCxSTA register is set to ‘1’ to enable the EUSART interface
Important: Clearing the SREN and CREN bits of the RCxSTA register ensures that the device is in the Transmit mode, otherwise the device will be configured to receive.