R01UH0823EJ0100 Rev.1.00 Page 1203 of 1823
Jul 31, 2019
RX23W Group 36. CAN Module (RSCAN)
AERR Flag (ACK Error Flag)
This flag becomes 1 when an ACK error has been detected.
CERR Flag (CRC Error Flag)
This flag becomes 1 when a CRC error has been detected.
B1ERR Flag (Recessive Bit Error Flag)
This flag becomes 1 when a dominant bit has been detected though a recessive bit was transmitted.
B0ERR Flag (Dominant Bit Error Flag)
This flag becomes 1 when a recessive bit has been detected though a dominant bit was transmitted.
ADERR Flag (ACK Delimiter Error Flag)
This flag becomes 1 when a form error has been detected in the ACK delimiter during transmission.
36.2.8 Error Flag Register H (ERFLH)
CRCREG[14:0] Bits (CRC Calculation Data)
When the CTRH.CTME bit is set to 1 (communication test mode is enabled), the CRC value calculated based on the
transmit or receive message can be read. When the CTRH.CTME bit is set to 0 (communication test mode is disabled),
these bits are read as 0.
Address(es): RSCAN0.ERFLH 000A 830Eh
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
— CRCREG[14:0]
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b14 to b0 CRCREG[14:0] CRC Calculation Data A CRC value calculated based on the transmit message
or receive message is indicated.
R
b15 — Reserved This bit is read as 0. R
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