![](http://datasheet.mmic.net.cn/110000/M32186F8VFP_datasheet_3496152/M32186F8VFP_642.png)
13
CAN MODULE
13-32
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
13.2.4 CAN Configuration Registers
CAN0 Configuration Register (CAN0CONF)
<Address: H'0080 1006>
CAN1 Configuration Register (CAN1CONF)
<Address: H'0080 1406>
b0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
b15
SAM
PRB
PH1
PH2
SJW
000000000000
0
<Upon exiting reset: H’0000>
b
Bit Name
Function
R
W
0–1
SJW
00: SJW = 1Tq
R
W
reSynchronization Jump Width setting bit
01: SJW = 2Tq
10: SJW = 3Tq
11: SJW = 4Tq
2–4
PH2
000: Phase Segment2 = 1Tq
R
W
Phase Segment2 setting bit
001: Phase Segment2 = 2Tq
010: Phase Segment2 = 3Tq
011: Phase Segment2 = 4Tq
100: Phase Segment2 = 5Tq
101: Phase Segment2 = 6Tq
110: Phase Segment2 = 7Tq
111: Phase Segment2 = 8Tq
5–7
PH1
000: Phase Segment1 = 1Tq
R
W
Phase Segment1 setting bit
001: Phase Segment1 = 2Tq
010: Phase Segment1 = 3Tq
011: Phase Segment1 = 4Tq
100: Phase Segment1 = 5Tq
101: Phase Segment1 = 6Tq
110: Phase Segment1 = 7Tq
111: Phase Segment1 = 8Tq
8–10
PRB
000: Propagation Segment = 1Tq
R
W
Propagation Segment setting bit
001: Propagation Segment = 2Tq
010: Propagation Segment = 3Tq
011: Propagation Segment = 4Tq
100: Propagation Segment = 5Tq
101: Propagation Segment = 6Tq
110: Propagation Segment = 7Tq
111: Propagation Segment = 8Tq
11
SAM
0: Sampled one time
R
W
Sampling count select bit
1: Sampled three times
12–15
No function assigned. Fix to "0."
00
Notes: Do not change settings of the CAN Configuration Register (CAN0CONF or CAN1CONF) during CAN operation (CAN Status
Register CRS bit = "0").
Bit configuration is specified by the CAN protocol specification in such a way that it satisfies the conditions given below:
Number of Tq’s for one bit: 8–25 Tq’s
SJW
≤ min (Phase Segment1, Phase Segment2)
Phase Segment2 = max (Phase Segment1, IPT*) where IPT = 1 for the internal CAN modules of the 32185/32186
min() is the function that returns the smaller of two values; max() is the function that returns the maximum value.
*IPT is an abbreviation for Information Processing Time, which is the time immediately after the sampling point.
13.2 CAN Module Related Registers