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 |