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Chapter 19
CAN Controller (CAN)
Preliminary User’s Manual U17566EE1V2UM00
(8)
CnINFO - CANn module information register
The CnINFO register indicates the status of the CAN module.
After reset: 00H
R
Address: CnINFO <CnRBaseAddr> + 053
H
7
6
5
4
3
2
1
0
CnINFO
0
0
0
BOFF
TECS1
TECS0
RECS1
RECS0
BOFF
Bus-off status bit
0
Not bus-off status (transmit error counter
≤
255). (The value of the transmit
counter is less than 256.)
1
Bus-off status (transmit error counter > 255). (The value of the transmit
counter is 256 or more.)
TECS1
TECS0
Transmission error counter status bit
0
0
The value of the transmission error counter is less than that of
the warning level (< 96).
0
1
The value of the transmission error counter is in the range of the
warning level (96 to 127).
1
0
Undefined
1
1
The value of the transmission error counter is in the range of the
error passive or bus-off status (
≥
128).
RECS1
RECS0
Reception error counter status bit
0
0
The value of the reception error counter is less than that of the
warning level (< 96).
0
1
The value of the reception error counter is in the range of the
warning level (96 to 127).
1
0
Undefined
1
1
The value of the reception error counter is in the error passive
range (
≥
128).
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