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CHAPTER 21 CAN CONTROLLER
21.8
How to Use CAN Controller
The following settings are required to use the CAN controller;
• Bit timing
• Frame format
• ID
• Acceptance filter
• Low-power consumption mode
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Setting Bit Timing
The bit timing register (BTR) should be set during bus operation stop (when the bus operation stop bit
(HALT) of the control status register (CSR) is 1).
After the setting completion, write 0 to HALT to cancel bus operation stop.
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Setting Frame Format
Set the frame format used by the message buffer (x). When using the standard frame format, set IDEx of
the IDE register (IDER) to 0. When using the extended frame format, set IDEx to 1.
This setting should be made when the message buffer (x) is invalid (BVALx of the message buffer valid
register (BVALR) is 0). Setting when the buffer is valid (BVALx = 1) may cause unnecessary received
messages to be stored.
■
Setting ID
Set the message buffer (x) ID to ID28 to ID0 of ID register (IDRx). The message buffer (x) ID need not be
set to ID11 to ID0 in the standard frame format. The message buffer (x) ID is used as a transmission
message at transmission and is used as an acceptance code at reception.
This setting should be made when the message buffer (x) is invalid (BVALx of the message buffer valid
register (BVALR) is 0). Setting when the buffer is valid (BVALx = 1) may cause unnecessary received
messages to be stored.
■
Setting Acceptance Filter
The acceptance filter of the message buffer (x) is set by an acceptance code and acceptance mask set. It
should be set when the acceptance message buffer (x) is invalid (BVALx of the message buffer enable
register (BVALR) is 0). Setting when the buffer is valid (BVALx = 1) may cause unnecessary received
messages to be stored.
Set the acceptance mask used in each message buffer (x) by the acceptance mask select register (AMSR).
The acceptance mask registers (AMR0 and AMR1) should also be set if used (For the setting details, see
"21.4.21 Acceptance Mask Select Register (AMSR)" and "21.4.22 Acceptance Mask Registers 0 and 1
(AMR0 and AMR1)").
The acceptance mask should be set so that a transmission request may not be canceled when unnecessary
received messages are stored. For example, it should be set to a full-bit comparison if only one specific ID
is used for the transmission.
Summary of Contents for F2MCTM-16LX
Page 2: ......
Page 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
Page 4: ......
Page 42: ...26 CHAPTER 1 OVERVIEW ...
Page 70: ...54 CHAPTER 2 CPU ...
Page 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Page 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Page 194: ...178 CHAPTER 10 I O PORTS ...
Page 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Page 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Page 296: ...280 CHAPTER 15 WATCH TIMER ...
Page 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Page 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Page 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Page 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Page 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Page 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Page 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Page 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Page 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Page 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Page 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Page 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Page 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Page 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Page 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Page 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Page 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Page 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Page 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Page 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Page 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Page 664: ...648 APPENDIX ...
Page 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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