Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 339
SAM9G20
RXBUFF: Receive Buffer Full
0: The buffer full signal from the receiver PDC channel is inactive.
1: The buffer full signal from the receiver PDC channel is active.
COMMTX: Debug Communication Channel Write Status
0: COMMTX from the Arm processor is inactive.
1: COMMTX from the Arm processor is active.
COMMRX: Debug Communication Channel Read Status
0: COMMRX from the Arm processor is inactive.
1: COMMRX from the Arm processor is active.