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Chapter 13
FCAN Interface Function
Preliminary User’s Manual U14913EE1V0UM00
Note: The register address is calculated according to the following formula:
effective address = P address offset
Remark:
m = 00 to 63
Cautions: 1. When transmitting data, only the number of bytes defined by the data length code
(DLC) in the M_DLCm register are transmitted on the CAN bus. The transmission
always starts with M_DATAm0.
2. If the ATS flag of the corresponding CxCTRL register is set (1) and the data length
code (DLC) in the M_DLCm register is greater or equal 2, the last two bytes which
are normally taken from the data part of the message buffer are ignored, and
instead of these bytes a time stamp value is sent. (x = 1 to 3) (refer to chapter
13.2.5)
3. When a new message is received, all data bytes are updated, even if the data length
code (DLC) in the M_DLCm register is less than 8. The values of the data bytes that
have not been received may be change undefined.
Bit Position
Bit Name
Function
7 to 0
(M_DATAm0)
D0_7 to
D0_0
Contents of the message data byte 0. (first message data byte)
7 to 0
(M_DATAm1)
D1_7 to
D1_0
Contents of the message data byte 1.
7 to 0
(M_DATAm2)
D2_7 to
D2_0
Contents of the message data byte 2.
7 to 0
(M_DATAm3)
D3_7 to
D3_0
Contents of the message data byte 3.
7 to 0
(M_DATAm4)
D4_7 to
D4_0
Contents of the message data byte 4.
7 to 0
(M_DATAm5)
D5_7 to
D5_0
Contents of the message data byte 5.
7 to 0
(M_DATAm6)
D6_7 to
D6_0
Contents of the message data byte 6.
7 to 0
(M_DATAm7)
D7_7 to
D7_0
Contents of the message data byte 7.
Summary of Contents for V850E/CA1 ATOMIC
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