BAUD

Baud Rate

  0x0C 32 PAC Write-Protection, Enable-Protected 0x0000  
Parent topic: Register Description - I2C Host

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

High Speed Host Baud Rate Low

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

HSBAUDLOW=fGCLK⋅TLOW−1

HSBAUDLOW equal to zero: The HSBAUD register is used to time TLOW, THIGH, TSU;STO, THD;STA and TSU;STA.. TBUF is timed by the BAUD register.

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

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, TLOW, THIGH, TSU;STO, THD;STA and TSU;STA are derived using this formula. TBUF is timed by the BAUD register.

HSBAUD=fGCLK⋅THIGH−1

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

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 Clock Generation – Baud-Rate Generator.

Bits 7:0 – BAUD[7:0]: Host Baud Rate

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 Clock Generation – Baud-Rate Generator.