481
Chapter 14
FCAN Interface Function
Preliminary User’s Manual U15839EE1V0UM00
(7)
Message control registers 00 to 31 (M_CTRL0 to M_CTRL31)
The M_CTRLm registers control the behaviour on reception or transmission of the corresponding
message buffer m (m = 00 to 31).
These registers can be read/written in 8-bit units.
Figure 14-30:
Message Control Registers 00 to 31 (M_CTRL00 to M_CTRL31) (1/2)
Note: The register address is calculated according to the following formula:
effective address = P address offset
Remark:
m = 00 to 31
7
6
5
4
3
2
1
0
Address
Offset
Note
Initial
value
M_CTRL
m
RMDE1 RMED0
ATS
IE
MOVR
R1
R0
RTR
805H
+ (m
×
20H)
undef.
Bit Position
Bit Name
Function
7
RMED1
Specifies the remote frame handling mode 1.
0: DN flag is not changed, when receiving a remote frame.
1: DN flag is set (1), when receiving a remote frame.
Remark:
The remote frame handling mode 1 is only valid for transmit messages and
indicates how the DN flag is updated if a remote frame is received on that
message buffer. (For details refer to chapter 14.2.8 “Remote frame han-
dling” on page 449)
6
RMED0
Specifies the remote frame handling mode 0.
0: Auto answering of remote frame is not active.
1: Auto answering of remote frame is active.
Remark:
The remote frame handling mode 0 is only valid for transmit messages and
indicates how to respond if a remote frame is received on that message
buffer. (For details refer to chapter 14.2.8 “Remote frame handling” on
page 449)
5
ATS
Controls appending of the time stamp.
0: No time stamp appending.
1: Append time stamp (Only valid for transmit messages)
Remark:
This bit is only handled for transmit messages. If ATS is set (1) and the
data length code (DLC) is greater or equal 2, the last two data bytes are
replaced by the 16-bit time stamp. The appended time stamp is the cap-
ture value of the CAN global time system counter (CGTSC) on the SOF for
this message. The last two data bytes defined in the data area are ignored.
(For further details refer to chapter 14.2.5 “Time stamp” on page 441)
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