33.10.3 Baud Rate


Bit	31	30	29	28	27	26	25	24
	HSBAUDLOW[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	HSBAUD[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	BAUDLOW[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


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

Bits 31:24 – HSBAUDLOW[7:0] High Speed Host Baud Rate Low

HSBAUDLOW non-zero: HSBAUDLOW indicates the SCL low time in High-speed mode according to

$HSBAUDLOW = f_{GCLK} \cdot T_{LOW} - 1$

HSBAUDLOW equal to zero: The HSBAUD register is used to time T_LOW,T_HIGH,T_SU;STO, T_HD;STAand T_SU;STA.. T_BUFis timed by the BAUD register.

Bits 23:16 – HSBAUD[7:0] High Speed Host Baud Rate

This bit field indicates the SCL high time in High-speed mode according to the following formula. When HSBAUDLOW is zero, T_LOW,T_HIGH,T_SU;STO,T_HD;STAand T_SU;STAare derived using this formula. T_BUF is timed by the BAUD register.

$HSBAUD = f_{GCLK} \cdot T_{HIGH} - 1$

Bits 15:8 – BAUDLOW[7:0] Host Baud Rate Low

If this bit field is non-zero, the SCL low time will be described by the value written.

For more information on how to calculate the frequency, see SERCOM 30.6.2.3 Clock Generation – Baud-Rate Generator.

Bits 7:0 – BAUD[7:0] Host Baud Rate

This bit field is used to derive the SCL high time if BAUD.BAUDLOW is non-zero. If BAUD.BAUDLOW is zero, BAUD will be used to generate both high and low periods of the SCL.

For more information on how to calculate the frequency, see SERCOM 30.6.2.3 Clock Generation – Baud-Rate Generator.

Name:	BAUD
Offset:	0x0C
Reset:	0x0000
Property:	PAC Write-Protection, Enable-Protected