24.4.1 Synchronous Master Mode

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

  • The SYNC bit is set to ‘1’ to configure the EUSART for synchronous operation
  • The Clock Source Select (CSRC) bit is set to ‘1’ to configure the EUSART as the master
  • The Single Receive Enable (SREN) bit is set to ‘0’ for transmit; SREN = 1 for receive (recommended setting to receive 1 byte)
  • The Continuous Receive Enable (CREN) bit is set to ‘0’ for transmit; CREN = 1 to receive continuously
  • The SPEN bit is set to ‘1’ to enable the EUSART interface
Important: Clearing the SREN and CREN bits ensure that the device is in the Transmit mode, otherwise the device will be configured to receive.