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Chapter 13
FCAN Interface Function
Preliminary User’s Manual U14913EE1V0UM00
For the time stamp capturing at message transmission the SOF signal of the transmit message is used
as the event trigger (see Figure 13-6).
The captured value from the CGTSC counter is written into particular data bytes of the transmit mes-
sage’s data field. Table 13-9 shows the scheme about which data bytes of the data field are replaced
with the time stamp capture value according to the setting of the M_DLCm register (m = 00 to 63).
Figure 13-6: Time Stamp Capturing at Message Transmission
Table 13-9: Transmitted Data On the CAN Bus (ATS = 1)
Note: CGTSC value captured at SOF.
Remark:
m = 00 to 63
M_DLCm Bus Data 1 Bus Data 2 Bus Data 3 Bus Data 4 Bus Data 5 Bus Data 6 Bus Data 7 Bus Data 8
1
M_DATAm
0
–
–
–
–
–
–
–
2
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
–
–
–
–
–
3
M_DATAm
0
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
–
–
–
–
4
M_DATAm
0
M_DATAm
1
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
–
–
–
5
M_DATAm
0
M_DATAm
1
M_DATAm
2
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
–
–
6
M_DATAm
0
M_DATAm
1
M_DATAm
2
M_DATAm
3
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
–
7
M_DATAm
0
M_DATAm
1
M_DATAm
2
M_DATAm
3
M_DATAm
4
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
–
8
M_DATAm
0
M_DATAm
1
M_DATAm
2
M_DATAm
3
M_DATAm
4
M_DATAm
5
lower 8-bit of
CGTSC
Note
upper 8-bit
of CGTSC-
Note
SOF
ACK
Message
Temporary Buffer
capture
Time stamp (transmission):
transmisson as last
two data bytes
CAN Global Time
System Counter
Summary of Contents for V850E/CA1 ATOMIC
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