R01UH0823EJ0100 Rev.1.00
Page 1201 of 1823
Jul 31, 2019
RX23W Group
36. CAN Module (RSCAN)
36.2.7
Error Flag Register L (ERFLL)
Note 1. Only 0 can be written to this bit, to clear the flag. Writing 1 does not affect the flag value.
See the CAN standard (ISO 11898-1) if you want to check error occurrence conditions. To clear each flag of this register,
write 0 by the program. These flags cannot be set to 1 by the program. If any of these flags becomes 1 at the timing when
the program writes 0 to the flag, the flag becomes 1. Each flag becomes 0 in channel reset mode.
With respect to b14 to b8 in the ERFLL register, if an error is detected with all flags of b14 to b8 set to 0 when the
CTRH.ERRD bit is set to 0 (only the first error information is displayed), the corresponding flag becomes 1.
This flag becomes 1 when any one of the ADERR, B0ERR, B1ERR, CERR, AERR, FERR, and SERR flags becomes 1.
Address(es): RSCAN0.ERFLL 000A 830Ch
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
—
ADERR B0ERR B1ERR CERR AERR FERR SERR
ALF
BLF
OVLF
BORF BOEF
EPF
EWF
BEF
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Bus Error Flag
0: No channel bus error is detected.
1: Channel bus error is detected.
R/(W)
*
b1
Error Warning Flag
0: No error warning is detected.
1: Error warning is detected.
R/(W)
*
b2
Error Passive Flag
0: No error passive is detected.
1: Error passive is detected.
R/(W)
*
b3
Bus Off Entry Flag
0: No bus off entry is detected.
1: Bus off entry is detected.
R/(W)
*
b4
Bus Off Recovery Flag
0: No bus off recovery is detected.
1: Bus off recovery is detected.
R/(W)
*
b5
Overload Flag
0: No overload is detected.
1: Overload is detected.
R/(W)
*
b6
Bus Lock Flag
0: No channel bus lock is detected.
1: Channel bus lock is detected.
R/(W)
*
b7
Arbitration Lost Flag
0: No arbitration lost is detected.
1: Arbitration lost is detected.
R/(W)
*
b8
Stuff Error Flag
0: No stuff error is detected.
1: Stuff error is detected.
R/(W)
*
b9
Form Error Flag
0: No form error is detected.
1: Form error is detected.
R/(W)
*
b10
ACK Error Flag
0: No ACK error is detected.
1: ACK error is detected.
R/(W)
*
b11
CRC Error Flag
0: No CRC error is detected.
1: CRC error is detected.
R/(W)
*
b12
Recessive Bit Error Flag
0: No recessive bit error is detected.
1: Recessive bit error is detected.
R/(W)
*
b13
Dominant Bit Error Flag
0: No dominant bit error is detected.
1: Dominant bit error is detected.
R/(W)
*
b14
ACK Delimiter Error Flag
0: No ACK delimiter error is detected.
1: ACK delimiter error is detected.
R/(W)
*
b15
—
Reserved
This bit is read as 0. The write value should be 0.
R/W