Datasheet

SAM9G20
DS60001516A-page 478  2017 Microchip Technology Inc.
PAR: Parity Type
NBSTOP: Number of Stop Bits
CHMODE: Channel Mode
MSBF: Bit Order
0: Least Significant Bit is sent/received first.
1: Most Significant Bit is sent/received first.
MODE9: 9-bit Character Length
0: CHRL defines character length.
1: 9-bit character length.
CLKO: Clock Output Select
0: The USART does not drive the SCK pin.
1: The USART drives the SCK pin if USCLKS does not select the external clock SCK.
OVER: Oversampling Mode
0: 16x Oversampling.
1: 8x Oversampling.
INACK: Inhibit Non Acknowledge
0: The NACK is generated.
1: The NACK is not generated.
PAR Parity Type
000Even parity
0 0 1 Odd parity
0 1 0 Parity forced to 0 (Space)
0 1 1 Parity forced to 1 (Mark)
10xNo parity
1 1 x Multidrop mode
NBSTOP Asynchronous (SYNC = 0) Synchronous (SYNC = 1)
0 0 1 stop bit 1 stop bit
0 1 1.5 stop bits Reserved
1 0 2 stop bits 2 stop bits
1 1 Reserved Reserved
CHMODE Mode Description
0 0 Normal Mode
0 1 Automatic Echo. Receiver input is connected to the TXD pin.
1 0 Local Loopback. Transmitter output is connected to the Receiver Input..
1 1 Remote Loopback. RXD pin is internally connected to the TXD pin.