XC886/888CLM
Controller Area Network (MultiCAN) Controller
User’s Manual
15-69
V1.3, 2010-02
MultiCAN, V1.0
The Node Bit Timing Register NBTRx contains all parameters to set up the bit timing for
the CAN transfer. NBTRx can be written only if bit NCRx.CCE is set.
NBTRx (x = 0-1)
Node x Bit Timing Register
Reset Value: 0000 0000
H
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
r
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DIV8
TSEG2
TSEG1
SJW
BRP
rw
rw
rw
rw
rw
Field
Bits
Type Description
BRP
[5:0]
rw
Baud Rate Prescaler
The duration of one time quantum is given by
(BRP + 1) clock cycles if DIV8 = 0.
The duration of one time quantum is given by
8
×
(BRP + 1) clock cycles if DIV8 = 1.
SJW
[7:6]
rw
(Re) Synchronization Jump Width
(SJW + 1) time quanta are allowed for re-
synchronization.
TSEG1
[11:8]
rw
Time Segment Before Sample Point
(TSEG1 + 1) time quanta is the user-defined nominal
time between the end of the synchronization segment
and the sample point. It includes the propagation
segment, which takes into account signal propagation
delays. The time segment may be lengthened due to
re-synchronization.
Valid values for TSEG1 are 2 to 15.
TSEG2
[14:12] rw
Time Segment After Sample Point
(TSEG2 + 1) time quanta is the user-defined nominal
time between the sample point and the start of the
next synchronization segment. It may be shortened
due to re-synchronization.
Valid values for TSEG2 are 1 to 7.
*