477
Chapter 14
FCAN Interface Function
Preliminary User’s Manual U15839EE1V0UM00
(4)
Message set/clear status registers 00 to 31 (SC_STAT0 to SC_STAT31)
The SC_STATm registers set/clear the flags of the corresponding M_STATm registers
(m = 00 to 31). By means of this register transmission can be requested and reception can be con-
firmed.
These registers can be written-only in 16-bit units.
Figure 14-27:
Message Set/Clear Status Registers 00 to 31 (SC_STAT00 to SC_STAT31)
Note: The register address is calculated according to the following formula:
effective address = P address offset
Remark:
m = 00 to 31
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Address
Offset
Note
Initial
value
SC_STAT
m
0
0
0
0
ST_
ERQ
ST_
DN
ST_
TRQ
ST_
RDY
0
0
0
0
CL_
ERQ
CL_
DN
CL_
TRQ
CL_
RDY
816H
+(m
×
20H)
–
Bit Position
Bit Name
Function
11, 3
ST_ERQ,
CL_ERQ
Sets/clears the ERQ bit of the M_STATm register.
10, 2
ST_DN,
CL_DN
Sets/clears the DN bit of the M_STATm register.
9, 1
ST_TRQ,
CL_TRQ
Sets/clears the TRQ bit of the M_STATm register.
8, 0
ST_RDY,
CL_RDY
Sets/clears the RDY bit of the M_STATm register.
ST_ERQ
CL_ERQ
Status of ERQ bit
0
1
ERQ bit is cleared (0).
1
0
ERQ bit is set (1).
Others
No change in ERQ bit value.
ST_DN
CL_DN
Status of DN bit
0
1
DN bit is cleared (0).
1
0
DN bit is set (1).
Others
No change in DN bit value.
ST_TRQ
CL_TRQ
Status of TRQ bit
0
1
TRQ bit is cleared (0).
1
0
TRQ bit is set (1).
Others
No change in TRQ bit value.
ST_RDY
CL_RDY
Status of RDY bit
0
1
RDY bit is cleared (0).
1
0
RDY bit is set (1).
Others
No change in RDY bit value.
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