13
13-79
Ver.0.10
CAN MODULE
13.8 Receiving Remote Frames
(5) Operation after receiving a remote frame
The operation performed after receiving a remote frame differs depending on how automatic
response is set.
➀
When automatic response is disabled
The slot which finished receiving goes to an inactive state and remains inactive (neither
transmit nor receive) until it is newly set in software.
➁
When automatic response is enabled
After receiving a remote frame, the slot automatically changes to a data frame transmit slot
and performs the transmit operation described below. In this case, the transmitted data
conforms to the ID and DLC of the received remote frame.
• Selecting a transmit frame
The CAN module checks slots which have transmit requests (including remote frame
transmit slots) every intermission to determine the frame to transmit. If there are multiple
transmit slots, frames are transmitted in order of slot numbers beginning with the smallest.
• Transmitting a data frame
After determining the transmit slot, the CAN module sets the corresponding CAN Message
Slot Control Register's TRSTAT (Transmit/Receive Status) bit to 1, thereby starting
transmission.
• If the CAN module failed to gain control of the bus or a CAN bus error occurs
If the CAN module failed to gain control of the bus or a CAN bus error occurs while
transmitting, the CAN module clears the CAN Message Slot Control Register's TRSTAT
(Transmit/Receive Status) bit to 0. If the CAN module requested a transmit abort, the
transmit abort is accepted and writing to the message slot is enabled.
• Completion of data frame transmission
When data frame transmission is completed, the CAN Message Slot Control Register's
TRFIN (Transmit/Receive Finished) bit and the CAN Slot Interrupt Status Register are set
to 1. Also, a time stamp count value at the time transmission was completed is written to the
CAN Message Slot Time Stamp (C0MSLnTSP), and the transmit operation is thereby
completed.
If the CAN slot interrupt has been enabled, an interrupt request is generated at completion
of transmit operation. The slot which has had transmission completed goes to an inactive
state and remains inactive (neither transmit nor receive) until it is newly set in software.
Содержание M32170F3VFP
Страница 19: ...CHAPTER 1 CHAPTER 1 OVERVIEW 1 1 Outline of the 32170 1 2 Block Diagram 1 3 Pin Function 1 4 Pin Layout ...
Страница 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Страница 56: ...2 2 14 Ver 0 10 This is a blank page ...
Страница 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Страница 192: ...6 6 58 Ver 0 10 INTERNAL MEMORY 6 9 Precautions to Be Taken When Rewriting Flash Memory This is a blank page ...
Страница 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Страница 498: ...10 10 228 Ver 0 10 MULTIJUNCTION TIMERS 10 9 TOM Output related 16 bit Timer This is a blank page ...
Страница 550: ...11 11 52 Ver 0 10 A D CONVERTERS 11 4 Precautions on Using A D Converters This is a blank page ...
Страница 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Страница 710: ...14 14 16 Ver 0 10 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 746: ...16 16 20 Ver 0 10 WAIT CONTROLLER 16 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 757: ...CHAPTER 18 CHAPTER 18 OSCILLATION CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit ...
Страница 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Страница 798: ...19 19 36 Ver 0 10 JTAG 19 6 Precautions about Board Design when Connecting JTAG This is a blank page ...
Страница 830: ...21 21 24 Ver 0 10 PRELIMINARY PRELIMINARY This is a blank page ELECTRICAL CHARACTERISTICS 21 5 AC Characteristics ...
Страница 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Страница 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 837: ...Appendix 2 1 32170 Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...