15.4.2 CAN Nominal Bit Time Configuration Register(1), (2)
Note:
- The individual bytes in this
multibyte register can be accessed with the following register names:
- CxNBTCFGT: Accesses the top byte NBTCFG[31:24].
- CxNBTCFGU: Accesses the upper byte NBTCFG[23:16].
- CxNBTCFG: Accesses the byte NBTCFG[31:0].
- This register can only be
modified in Configuration mode (OPMOD[2:0] =
100).
| Name: | CxNBTCFG |
| Offset: | 0x2604, 0x28F4 |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| BRP[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 | |
| TSEG1[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| TSEG2[6:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| Reset | 0 | 0 | 0 | 1 | 1 | 1 | 1 | ||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SJW[6:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| Reset | 0 | 0 | 0 | 1 | 1 | 1 | 1 | ||
Bits 31:24 – BRP[7:0] Nominal Baud Rate Prescaler bits
| Value | Description |
|---|---|
| 11111111 | TQ = 256 x TCY |
| 00000000 | TQ = 1 x TCY |
Bits 23:16 – TSEG1[7:0] Nominal Time Segment 1 (Propagation Segment+Phase Segment 1) bits
| Value | Description |
|---|---|
| 11111111 | Length is 256 x TQ |
| ... | |
| 00000000 | Length is 1 x TQ |
Bits 14:8 – TSEG2[6:0] Nominal Time Segment 2 (Phase Segment 2) bits
| Value | Description |
|---|---|
| 1111111 | Length is 128 x TQ |
| ... | |
| 0000000 | Length is 1 x TQ |
Bits 6:0 – SJW[6:0] Nominal Synchronization Jump Width bits
| Value | Description |
|---|---|
| 1111111 | Length is 128 x TQ |
| ... | |
| 0000000 | Length is 1 x TQ |