Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 487
SAM9G20
31.7.8 USART Transmit Holding Register
Name:US_THR
Access:Write-only
TXCHR: Character to be Transmitted
Next character to be transmitted after the current character if TXRDY is not set.
TXSYNH: Sync Field to be transmitted
0: The next character sent is encoded as a data. Start Frame Delimiter is DATA SYNC.
1: The next character sent is encoded as a command. Start Frame Delimiter is COMMAND SYNC.
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
––––––––
15 14 13 12 11 10 9 8
TXSYNH ––––––TXCHR
76543210
TXCHR