PXD10RM Datasheet, PDF (710/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

NRZ Signal
SYNC_SEG
Time Segment 1
(PROP_SEG + PSEG1 + 2)
Time Segment 2
(PSEG2 + 1)
1
4 ... 16
8 ... 25 Time Quanta
= 1 Bit Time
2 ... 8
Transmit Point
Sample Point
(single or triple sampling)
Figure 18-17. Segments within the Bit Time
Table 18-19. Time Segment Syntax
Syntax
SYNC_SEG
Transmit Point
Sample Point
Description
System expects transitions to occur on the bus during this period.
A node in transmit mode transfers a new value to the CAN bus at this point.
A node samples 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 18-20 gives an overview of the CAN compliant segment settings and the related parameter values.
Table 18-20. CAN Standard Compliant Bit Time Segment Settings
Time Segment 1
5 .. 10
4 .. 11
5 .. 12
6 .. 13
7 .. 14
8 .. 15
9 .. 16
Time Segment 2
2
3
4
5
6
7
8
Resynchronization
Jump Width
1 .. 2
1 .. 3
1 .. 4
1 .. 4
1 .. 4
1 .. 4
1 .. 4
18-40
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor