25.5.7 Control G


Bit	7	6	5	4	3	2	1	0
	ABW[1:0]			ENC		PROTCONV[2:0]
Access	R/W	R/W		R/W		R/W	R/W	R/W
Reset	0	0		0		0	0	0

Bits 7:6 – ABW[1:0] Auto-baud Window Size

These bits control the tolerance for the difference between the baud rates between the two synchronizing devices when using LIN Constrained Auto-baud mode. The tolerance is determined by the number of baud samples between every two bits. When the baud rates are identical, there are 32 baud samples between each bit pair, as each bit is sampled 16 times.

Value	Name	Description
0x00	WDW0	32±6 (18% tolerance)
0x01	WDW1	32±5 (15% tolerance)
0x02	WDW2	32±7 (21% tolerance)
0x03	WDW3	32±8 (25% tolerance)

Bit 4 – ENC Encoding

This bit controls whether IrDA encoding and decoding is enabled. For more information, refer to the IRCOM Mode of Operation section.

Value	Description
0	IrDA encoding and decoding is disabled
1	IrDA encoding and decoding is enabled

Bits 2:0 – PROTCONV[2:0] Protocol Converter

This bit field is used to enable protocol conversion and defines how received characters are decoded to either a ‘0’ or ‘1’ bit. Protocol conversion cannot be used if IrDA encoding (ENC in USARTn.CTRLG) is enabled. Any configuration other than ‘0’ enables protocol conversion for transmit.

Value	Name	Description
0x00	NONE	No protocol conversion
0x01	FIXED	Single character for both ‘`0`’ and ‘`1`’
0x02	MASKED	AUXDATA2 works as a mask when decoding received data
0x03	DUAL	AUXDATA2 defines second value for ‘`1`’ when decoding received data
0x04	-	Reserved
0x05	-	Reserved
0x06	-	Reserved
0x07	-	Reserved

Name:	CTRLG
Offset:	0x06
Reset:	0x00
Property:	-