MC68HC908GZ8 Datasheet, PDF (177/344 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
MSCAN08 Controller (MSCAN08)
Clock System
NRZ SIGNAL
SYNC
_SEG
1
TIME SEGMENT 1
(PROP_SEG + PHASE_SEG1)
TIME SEG. 2
(PHASE_SEG2)
4 ... 16
2 ... 8
8... 25 TIME QUANTA
= 1 BIT TIME
SAMPLE POINT
(SINGLE OR TRIPLE SAMPLING)
Figure 16-8. Segments Within the Bit Time
SYNC_SEG
Table 16-3. Time Segment Syntax
System expects transitions to occur on the bus during this
period.
Transmit point
A node in transmit mode will transfer a new value to the CAN
bus at this point.
Sample point
A node in receive mode will sample the bus at this point. If the
three samples per bit option is selected then this point marks
the position of the third sample.
Time
Segment 1
5 .. 10
4 .. 11
5 .. 12
6 .. 13
7 .. 14
8 .. 15
9 .. 16
Table 16-4. CAN Standard Compliant
Bit Time Segment Settings
TSEG1
4 .. 9
3 .. 10
4 .. 11
5 .. 12
6 .. 13
7 .. 14
8 .. 15
Time
Segment 2
2
3
4
5
6
7
8
TSEG2
1
2
3
4
5
6
7
Synchronized
Jump Width
1 .. 2
1 .. 3
1 .. 4
1 .. 4
1 .. 4
1 .. 4
1 .. 4
SJW
0 .. 1
0 .. 2
0 .. 3
0 .. 3
0 .. 3
0 .. 3
0 .. 3
MC68HC908GZ8
MOTOROLA
MSCAN08 Controller (MSCAN08)
For More Information On This Product,
Go to: www.freescale.com
Data Sheet
177