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13-59
Ver.0.10
13.5 Transmitting Data Frames
13.5.1 Data Frame Transmit Procedure
The following describes the procedure for transmitting data frames.
(1) Initializing the CAN Message Slot Control Register
Initialize the CAN Message Slot Control Register for the slot in which you want to transmit by
writing H'00 to the register.
(2) Confirming that transmission is idle
Read the CAN Message Slot Control Register after being initialized and check the TRSTAT
(Transmit/Receive Status) bit to see that transmission has stopped and remains idle. If this bit =
1, it means that the CAN module is accessing the message slot, so you need to wait until the bit
is cleared.
(3) Setting transmit data
Set the transmit ID and transmit data in the message slot.
(4) Setting the Extended ID Register
Set the corresponding bit of the Extended ID Register to 0 when you want to transmit the data as
a standard frame or 1 when you want to transmit the data as an extended frame.
(5) Setting the CAN Message Slot Control Register
Write H'80 (note) to the CAN Message Slot Control Register to set the TR (Transmit Request) bit
to 1.
Note: When you are transmitting a data frame, always write H'80 to this register.
CAN MODULE
13.5 Transmitting Data Frames
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...