LM3S9B92 Datasheet, PDF (808/1279 Pages) Texas Instruments – Stellaris LM3S9B92 Microcontroller

Controller Area Network (CAN) Module
Bit/Field
7
6:4
3:0
Name
EOB
reserved
DLC
Type
R/W
RO
R/W
Reset
0
0x0
0x0
Description
End of Buffer
Value
0
1
Description
Message object belongs to a FIFO Buffer and is not the
last message object of that FIFO Buffer.
Single message object or last message object of a FIFO
Buffer.
This bit is used to concatenate two or more message objects (up to 32)
to build a FIFO buffer. For a single message object (thus not belonging
to a FIFO buffer), this bit must be set.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Data Length Code
Value
0x0-0x8
0x9-0xF
Description
Specifies the number of bytes in the data frame.
Defaults to a data frame with 8 bytes.
The DLC field in the CANIFnMCTL register of a message object must
be defined the same as in all the corresponding objects with the same
identifier at other nodes. When the message handler stores a data frame,
it writes DLC to the value given by the received message.
808
June 14, 2010
Texas Instruments-Advance Information