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Chapter 13
FCAN Interface Function
Preliminary User’s Manual U14913EE1V0UM00
(2)
CAN 1 to 3 control registers (C1CTRL to C3CTRL)
The CxCTRL registers control the operating modes and indicate the operating status of the corre-
sponding CAN module x
(x = 1 to 3).
These registers can be read in 8-bit and 16-bit units. It can be written in 16-bit units only. For setting
and clearing certain bits a special set/clear method applies (refer to chapter 13.3.1).
Figure 13-34: CAN 1 to 3 Control Registers (C1CTRL to C3CTRL) (1/4)
Note: The register address is calculated according to the following formula:
effective address = P address offset
Read
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Address
Offset
Note
Initial
value
C1CTRL TECS1 TECS0 RECS1 RECS0 BOFF TSTAT RSTAT ISTAT
0
DLEVR DLEVT OVM TMR STOP SLEEP INIT
850H
0101H
C2CTRL TECS1 TECS0 RECS1 RECS0 BOFF TSTAT RSTAT ISTAT
0
DLEVR DLEVT OVM TMR STOP SLEEP INIT
890H
0101H
C3CTRL TECS1 TECS0 RECS1 RECS0 BOFF TSTAT RSTAT ISTAT
0
DLEVR DLEVT OVM TMR STOP SLEEP INIT
8D0H
0101H
Write
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
C1CTRL
0
ST_
DLEVT
ST_
DLEVT
ST_
OVM
ST_
TMR
ST_
STOP
ST_
SLEEP
ST_
INIT
0
CL_
DLEVR
CL_
DLEVT
CL_
OVM
CL_
TMR
CL_
STOP
CL_
SLEEP
CL_
INIT
850H
C2CTRL
0
ST_
DLEVT
ST_
DLEVT
ST_
OVM
ST_
TMR
ST_
STOP
ST_
SLEEP
ST_
INIT
0
CL_
DLEVR
CL_
DLEVT
CL_
OVM
CL_
TMR
CL_
STOP
CL_
SLEEP
CL_
INIT
890H
C3CTRL
0
ST_
DLEVT
ST_
DLEVT
ST_
OVM
ST_
TMR
ST_
STOP
ST_
SLEEP
ST_
INIT
0
CL_
DLEVR
CL_
DLEVT
CL_
OVM
CL_
TMR
CL_
STOP
CL_
SLEEP
CL_
INIT
8D0H
Read (1/3)
Bit Position
Bit Name
Function
15, 14
TECS1,
TECS0
Indicates the transmission error counter status.
13, 12
RECS1,
RECS0
Indicates the reception error counter status.
TECS1
TECS0
Transmission Error Counter Status
0
0
Transmission error counter below warning level (< 96)
0
1
Transmission error counter in warning level range (96 to 127)
1
0
Reserved (not possible)
1
1
Transmission error counter above warning level (
≥
128)
RECS1
RECS0 Reception Error Counter Status
0
0
Reception error counter below warning level (< 96)
0
1
Reception error counter in warning level range (96 to 127)
1
0
Reserved (not possible)
1
1
Reception error counter above warning level (
≥
128)
Summary of Contents for V850E/CA1 ATOMIC
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