SPRUJ42E March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
PRODUCTION DATA
Nominal Bit Timing & Prescaler Register. Configuration of arbitration phase bit timing.
This register is only writable if the MCAN_CCCR[1] CCE and MCAN_CCCR[0] INIT bits are set. The CAN bit time may be programed in the range of 4 to 385 time quanta. The CAN time quantum may be programmed in the range of 1 to 512 MCAN functional clock periods. tq = (MCAN_NBTP[24-16] NBRP + 1) mtq. The MCAN_NBTP[15-8] NTSEG1 field is the sum of Prop_Seg and Phase_Seg1. The MCAN_NBTP[6-0] NTSEG2 field is Phase_Seg2.
Therefore the length of the bit time is (programmed values) [MCAN_NBTP[15-8] NTSEG1 + MCAN_NBTP[6-0] NTSEG2 + 3] tq or (functional values) [Sync_Seg + Prop_Seg + Phase_Seg1 + Phase_Seg2] tq.
The Information Processing Time (IPT) is zero, meaning the data for the next bit is available at the first clock edge after the sample point.
Return to Summary Table
Instance Name | Physical Address |
---|---|
MCAN0 | 5260 821Ch |
MCAN1 | 5261 821Ch |
MCAN2 | 5262 821Ch |
MCAN3 | 5263 821Ch |
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
NSJW | NBRP | ||||||
R/W | R/W | ||||||
3h | 0h | ||||||
23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
NBRP | |||||||
R/W | |||||||
0h | |||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
NTSEG1 | |||||||
R/W | |||||||
Ah | |||||||
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NU19 | NTSEG2 | ||||||
R | R/W | ||||||
0h | 3h |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
31:25 | NSJW | R/W | 3h | Nominal Resynchronization Jump Width |
24:16 | NBRP | R/W | 0h | Nominal Baud Rate Prescaler |
15:8 | NTSEG1 | R/W | Ah | Nominal Time segment before sample point |
7 | NU19 | R | 0h | Reserved |
6:0 | NTSEG2 | R/W | 3h | Nominal Time segment after sample point |