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Chapter 18
AFCAN Controller
User’s Manual U16580EE3V1UD00
(b) Re-synchronization
Synchronization is established again if a level change is detected on the bus during reception
(only if a recessive level was sampled previously).
•
The phase error of the edge is given by the relative position of the detected edge and sync segment.
<Sign of phase error>
0:
If the edge is within the sync segment
Positive:
If the edge is before the sample point (phase error)
Negative:
If the edge is after the sample point (phase error)
If phase error is positive: Phase segment 1 is lengthened by specified SJW.
If phase error is negative: Phase segment 2 is shortened by specified SJW.
•
The sample point of the data of the receiving node moves relatively due to the “discrepancy” in the
baud rate between the transmitting node and receiving node.
Figure 18-21:
Re-synchronization
CAN bus
Bit timing
CAN bus
Bit timing
Phase segment 1
Prop
segment
Sync
segment
Phase
segment 2
Phase segment 1
Prop
segment
Sync
segment
Phase
segment 2
Sample point
Sample point
If phase error is negative
If phase error is positive
Содержание MuPD70F3187
Страница 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
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Страница 32: ...32 User s Manual U16580EE3V1UD00 ...
Страница 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Страница 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Страница 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
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