MC68HC08AZ60A Datasheet, PDF (367/480 Pages) Motorola, Inc – Microcontrollers

NRZ SIGNAL
MSCAN08 Controller (MSCAN08)
Clock System
SYNC
_SEG
1
TIME SEGMENT 1
(PROP_SEG + PHASE_SEG1)
4 ... 16
8... 25 TIME QUANTA
= 1 BIT TIME
TIME SEG. 2
(PHASE_SEG2)
2 ... 8
SAMPLE POINT
(SINGLE OR TRIPLE SAMPLING)
Figure 21-8. Segments Within the Bit Time
Table 21-3. Time segment syntax
SYNC_SEG
Transmit point
Sample point
System expects transitions to occur on the bus
during this period.
A node in transmit mode will transfer a new
value to the CAN bus at this 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
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
Synchron.
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
Table 21-4. CAN Standard Compliant Bit Time Segment Settings
MC68HC08AZ60A — Rev 0.0
MOTOROLA
MSCAN08 Controller (MSCAN08)
Advance Information
367