MC68HC08AZ32A Datasheet, PDF (128/312 Pages) Motorola, Inc – HCMOS Microcontroller Unit

MSCAN08 Controller (MSCAN08)
NRZ SIGNAL
SYNC
_SEG
TIME SEGMENT 1
(PROP_SEG + PHASE_SEG1)
TIME SEG. 2
(PHASE_SEG2)
1
4 ... 16
2 ... 8
8... 25 TIME QUANTA
= 1 BIT TIME
SAMPLE POINT
(SINGLE OR TRIPLE SAMPLING)
Figure 11-9. Segments Within the Bit Time
.
Table 11-3. Time Segment Syntax
SYNC_SEG
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.
Table 11-4. CAN Standard Compliant Bit Time Segment Settings
Time
Segment 1
5 .. 10
4 .. 11
5 .. 12
6 .. 13
7 .. 14
8 .. 15
9 .. 16
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
MC68HC08AZ32A Data Sheet, Rev. 2
128
Freescale Semiconductor