LM3S8933 Luminary Micro, Inc, LM3S8933 Datasheet - Page 444

• Manufacturer Part Number: LM3S8933
• Description: Lm3s8933 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Controller Area Network (CAN) Module
444
Bit/Field
5
4
3
2
1
0
reserved
Control
TxRqst
Name
DataA
DataB
Arb
Type
RO
W
W
W
W
W
Reset
0
0
0
0
0
0
Preliminary
Description
Access Arbitration Bits
0: Arbitration bits unchanged.
1: Transfer ID + Dir + Xtd + MsgVal to message object.
Access Control Bits
0: Control bits unchanged.
1: Transfer control bits to message object.
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.
Access Transmission Request Bit
0: TxRqst bit unchanged.
1: Set TxRqst bit
Note:
Access Data Byte 0 to 3
0: Data bytes 0-3 are unchanged.
1: Transfer data bytes 0-3 (CANIFnDA1 and CANIFnDA2) to message
object.
Access Data Byte 4 to 7
0: Data bytes 4-7 unchanged.
1: Transfer data bytes 4-7 (CANIFnDB1 and CANIFnDB2) to message
object.
If a transmission is requested by programming this TxRqst
bit, the parallel TxRqst in the CANIFnMCTL register is
ignored.
July 25, 2008