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Chapter 18
AFCAN Controller
User’s Manual U16580EE3V1UD00
Figure 18-43:
Transmission via interrupt (using CnTGPT register)
Cautions: 1. The TRQ bit should be set after the RDY bit is set.
2. The RDY bit and TRQ bit should not be set at the same time.
Remarks: 1.
Also check the MBON flag at the beginning and at the end of the interrupt routine, in
order to check the access to the message buffers as well as TX history list registers, in
case a pending sleep mode had been executed. If MBON is detected to be cleared at
any check, the actions and results of the processing have to be discarded and pro-
cessed again, after MBON is set again.
It is recommended to cancel any sleep mode requests, before processing TX interrupts.
2.
If TOVF was set once, the transmit history list is inconsistent. Consider to scan all con-
figured transmit buffers for completed transmissions.
START
END
TOVF = 1?
Data frame or remote frame?
Set RDY bit
Yes
No
Set CnMDATAxm register
Set CnMDLCm register
Clear RTR bit of CnMCONFm
register
Set CnMIDLm and CnMIDHm
registers
Set CnMDLCm register
Set RTR bit of CnMCONFm
register
Set CnMIDLm and CnMIDHm
registers
Set TRQ bit
Remote frame
Data frame
Transmit completion
interrupt processing
Read CnTGPT register
Clear TOVF bit
Clear RDY bit
RDY = 0?
THPM = 1?
No
Yes
No
Yes
START
END
TOVF = 1?
Data frame or remote frame?
Set RDY bit
Yes
No
Set CnMDATAxm register
Set CnMDLCm register
Clear RTR bit of CnMCONFm
register
Set CnMIDLm and CnMIDHm
registers
Set CnMDLCm register
Set RTR bit of CnMCONFm
register
Set CnMIDLm and CnMIDHm
registers
Set TRQ bit
Remote frame
Data frame
Transmit completion
interrupt processing
Transmit completion
interrupt processing
Read CnTGPT register
Clear TOVF bit
Clear RDY bit
RDY = 0?
THPM = 1?
No
Yes
No
Yes
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
Page 1053: ......