MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 612

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

CANCTRL2 — Control Register 2
16.7.7 Control Register 2
MPC555
USER’S MANUAL
MSB
Bit(s)
Bit(s)
10:12
13:15
0
0
8:15
RESET:
0:7
0:7
8:9
1
0
/
CANCTRL2
MPC556
PRESDIV
PRESDIV
PSEG1
PSEG2
Name
Name
RJW
2
0
PRESDIV
3
0
Prescaler divide factor. PRESDIV determines the ratio between the IMB clock frequency and
the serial clock (S-clock). The S-clock is determined by the following calculation:
The reset value of PRESDIV is 0x00, which forces the S-clock to default to the same fre-
quency as the IMB clock. The valid programmed values are 0 through 255.
See
Resynchronization jump width. The RJW field defines the maximum number of time quanta
a bit time may be changed during resynchronization. The valid programmed values are zero
through three.
The resynchronization jump width is calculated as follows:
Resynchronizaton Jump Width = (RJW + 1) Time Quanta
PSEG1[2:0] — Phase buffer segment 1. The PSEG1 field defines the length of phase buffer
segment one in the bit time. The valid programmed values are zero through seven.
The length of phase buffer segment 1 is calculated as follows:
Phase Buffer Segment 1 = (PSEG1 + 1) Time Quanta
PSEG2 — Phase Buffer Segment 2. The PSEG2 field defines the length of phase buffer seg-
ment two in the bit time. The valid programmed values are zero through seven.
The length of phase buffer segment two is calculated as follows:
Phase Buffer Segment 2 = (PSEG2 + 1) Time Quanta
See
Table 16-18 CANCTRL2 Bit Descriptions
Table
Table
Table 16-17 PRESDIV Bit Descriptions
4
0
16-18.
16-17.
CAN 2.0B CONTROLLER MODULE
5
0
Rev. 15 October 2000
6
0
7
0
8
0
RJW
S-clock
Description
Description
9
0
=
----------------------------------- -
PRESDIV
10
0
f
SYS
PSEG
11
0
+
1
12
0
13
0
0x30 7088
0x30 7488
MOTOROLA
PSEG2
14
0
16-30
LSB
15
0