NBTP

This register is write-restricted and only writable if bit fields CCCR.CCE = 1 and CCCR.INIT = 1.

The CAN bit time may be programmed in the range of 4 to 385 time quanta. The CAN time quantum may be programmed in the range of 1 to 512 GCLK_CAN periods. t_q = (NBRP + 1) mtq.

Note: With a CAN clock (GCLK_CAN) of 8MHz, the reset value 0x06000A03 configures the CAN for a bit rate of 500 kBits/s.

Bit31	30	29	28	27	26	25	24
NSJW[6:0]							NBRP[8:8]
AccessR/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset0	0	0	0	0	1	1	0
Bit23	22	21	20	19	18	17	16
NBRP[7:0]
AccessR/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset0	0	0	0	0	0	0	0
Bit15	14	13	12	11	10	9	8
NTSEG1[7:0]
AccessR/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset0	0	0	0	1	0	1	0
Bit7	6	5	4	3	2	1	0
	NTSEG2[6:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	1	1

Bits 31:25 – NSJW[6:0]: Nominal (Re)Syncronization Jump Width

Nominal (Re)Syncronization Jump Width

Value	Description
0x00 - 0x7F	Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that one more than the programmed value is used.

Bits 24:16 – NBRP[8:0]: Nominal Baud Rate Prescaler

Nominal Baud Rate Prescaler

Value	Description
0x000 - 0x1FF	The value by which the oscillator frequency is divided for generating the bit time quanta. The bit time is built up from a multiple of this quanta. Valid values for the Baud Rate Prescaler are 0 to 511. The actual interpretation by the hardware of this value is such that one more than the value programmed here is used.

Bits 15:8 – NTSEG1[7:0]: Nominal Time segment before sample point

Nominal Time segment before sample point

Value	Description
0x00 - 0x7F	Valid values are 1 to 255. The actual interpretation by the hardware of this value is such that one more than the programmed value is used. NTSEG1 is the sum of Prop_Seg and Phase_Seg1.

Bits 6:0 – NTSEG2[6:0]: Time segment after sample point

Time segment after sample point

Value	Description
0x00 - 0x7F	Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that one more than the programmed value is used. NTSEG2 is Phase_Seg2.