C515C_9711 Datasheet, PDF (150/268 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C515C
CAN Bit Timing Register Low BTR0 (Address XX04H)
Bit No. MSB
7
6
5
4
3
2
XX04H
SJW
rw
BRP
rw
Reset Value : UUH
LSB
1
0
BTR0
Bit
SJW
BRP
Function
(Re)Synchronization jump width
Adjust the bit time by (SJW+1) time quanta for resynchronization.
Baud rate prescaler
For generating the bit time quanta the oscillator frequency is divided by (BRP+1).
Note :This register can only be written, if the configuration change enable bit (CCE) is set.
CAN Bit Timing Register High BTR1 (Address XX05H)
Bit No. MSB
7
6
5
4
3
XX05H
0
TSEG2
r
rw
Reset Value : 0UUUUUUUB
LSB
2
1
0
TSEG1
BTR1
rw
Bit
TSEG2
TSEG1
Function
Time segment after sample point
There are (TSEG2+1) time quanta after the sample point. Valid values for TSEG2
are “1...7”.
Time segment before sample point
There are (TSEG1+1) time quanta before the sample point. Valid values for
TSEG1 are “2...15”.
Note :This register can only be written, if the configuration change enable bit (CCE) is set.
Semiconductor Group
6-87
1997-11-01