457
21.4.4
Notes on Using Bus Operation Stop Bit (HALT = 1)
The bus operation stop bit is set by writing to the bit, hardware reset and the node
status. The stop operation of the bus operation is different according to the state of the
message buffer.
■
Conditions for Setting Bus Operation Stop (HALT=1)
There are 3 conditions for setting bus operation stop (HALT = 1):
•
After hardware reset
•
When node status changed to bus off
•
By writing 1 to HALT
Notes:
•
The bus operation should be stopped by writing 1 to HALT before the F
2
MC-16LX is changed in low-
power consumption mode (stop mode and timebase timer mode). If transmission is in progress when 1 is
written to HALT, the bus operation is stopped (HALT = 1) after transmission is terminated. If reception
is in progress when 1 is written to HALT, the bus operation is stopped immediately (HALT = 1). If
received messages are being stored in the message buffer (x), stop the bus operation (HALT = 1) after
storing the messages.
•
To check whether the bus operation has stopped, always read the HALT bit.
■
Conditions for Canceling Bus Operation Stop (HALT = 0)
The condition for canceling the bus operation if halt is writing 0 to HALT.
Notes:
•
Canceling the bus operation stop after hardware reset or by writing 1 to HALT as above conditions is
performed after 0 is written to HALT and continuous 11-bit High levels (recessive bits) have been input
to the receive input pin (RX) (HALT = 0).
•
Canceling the bus operation stop when the node status is changed to bus off as above conditions is
performed after 0 is written to HALT and continuous 11-bit High levels (recessive bits) have been input
128 times to the receive input pin (RX) (HALT = 0). Then, the values of both transmit and receive error
counters reach 0 and the node status is changed to error active.
•
When write 0 to HALT during the node status is Bus Off, ensure that 1 is written to this bit.
■
State during Bus Operation Stop (HALT = 1)
•
The bus does not perform any operation, such as transmission and reception.
•
The transmit output pin (TX) outputs a High level (recessive bit).
•
The values of other registers and error counters are not changed.
Note:
The bit timing register (BTR) should be set during bus operation stop (HALT = 1).
Содержание F2MCTM-16LX
Страница 2: ......
Страница 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
Страница 4: ......
Страница 42: ...26 CHAPTER 1 OVERVIEW ...
Страница 66: ...50 CHAPTER 2 CPU MOV ILM imm8 The instruction is executed normally but the prefix affects the next instruction ...
Страница 70: ...54 CHAPTER 2 CPU ...
Страница 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Страница 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Страница 194: ...178 CHAPTER 10 I O PORTS ...
Страница 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Страница 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Страница 295: ...279 CHAPTER 15 WATCH TIMER ORG 00FFDCH Reset vector set DSL START DB 00H Set to single chip mode VECT ENDS END START ...
Страница 296: ...280 CHAPTER 15 WATCH TIMER ...
Страница 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Страница 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Страница 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Страница 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Страница 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Страница 635: ...619 APPENDIX B Instructions Table B 9 5 2 byte Instruction Map first byte 6FH MUL MULW DIVU A A A ...
Страница 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Страница 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Страница 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Страница 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Страница 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Страница 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Страница 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Страница 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Страница 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Страница 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Страница 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Страница 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Страница 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Страница 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Страница 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Страница 664: ...648 APPENDIX ...
Страница 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Страница 682: ......