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Figure 4-5 – FUJITSU MB91460 SERIES FR60 User Manual

Page 747

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Chapter 34 CAN Controller

4.CAN Application

Figure 4-5 Bit Timing

Table 4-1 Parameters of the CAN Bit Time

(Note)

This table describes the minimum programmable ranges required by the CAN protocol.

Parameter

Range

Remark

BRP

[1..32]

defines the legth of the time quantum tq

Sync_Seg

1 tq

fixed length, synchronisation of us into system clock

Prop_Seg

[1..8] tq

compensates for the physical delay times

Phase_Seg1

[1..8] tq

may be lengthened temporarily by synchronisation

Phase_Seg2

[1..8] tq

may be shortened temporarily by synchronisation

SJW

[1..4] tq

may not be longer than either Phase Buffer Segment