
49.4.2.3.2 Function
This register is defined for specific FlexCAN control features related to the CAN bus,
such as bit rate, programmable sampling point within an Rx bit, Loop Back mode, Listen-
Only mode, Bus Off recovery behavior, and interrupt enabling (Bus-Off, Error,
Warning). It also determines the division factor for the clock prescaler.
The CAN bit timing variables (PRESDIV, PROPSEG, PSEG1, PSEG2, and RJW) can
also be configured in the CBT register, which extends the range of all these variables. If
CBT[BTF] is set, PRESDIV, PROPSEG, PSEG1, PSEG2, and RJW fields of CTRL1
become read only.
NOTE
When the CAN FD feature is enabled, do not use the
PRESDIV, RJW, PSEG1, PSEG2, and PROPSEG fields of the
CTRL1 register for CAN bit timing. Instead use the CBT
register's EPRESDIV, ERJW, EPSEG1, EPSEG2, and
EPROPSEG fields.
The contents of this register are not affected by soft reset.
NOTE
The CAN bit variables in CTRL1 and in CBT are stored in the
same register.
49.4.2.3.3 Diagram
Bits
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
49.4.2.3.4 Fields
Field
Function
31-24
Prescaler Division Factor
Table continues on the next page...
Chapter 49 FlexCAN
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
NXP Semiconductors
1581
Содержание MWCT101 S Series
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