LM3S2730 Luminary Micro, Inc, LM3S2730 Datasheet - Page 338

• Manufacturer Part Number: LM3S2730
• Description: Lm3s2730 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Reset
Reset
Type
Type
Controller Area Network (CAN) Module
Write-Only CANIFnCMSK Register
CAN IF1 Command Mask (CANIF1CMSK)
CAN0 base: 0x4004.0000
Offset 0x024
Type R/W, reset 0x0000.0000
338
Bit/Field
Bit/Field
31:8
2
1
0
7
6
RO
RO
31
15
0
0
RO
RO
30
14
0
0
reserved
WRNRD
RO
RO
NewDat
29
13
0
0
Name
DataA
DataB
Name
Mask
RO
RO
28
12
0
0
reserved
RO
RO
27
11
0
0
Type
Type
RO
W
W
R
R
R
RO
RO
26
10
0
0
0x0000
Reset
Reset
RO
RO
25
0
0
0
0
9
0
0
0
Preliminary
RO
RO
24
0
8
0
Description
Access New Data
0: NewDat bit unchanged.
1: Clear NewDat bit in the message object.
Note:
Access Data Byte 0 to 3
0: Data bytes 0-3 are unchanged.
1: Transfer data bytes 0-3 in message object to CANIFnDA1 and
CANIFnDA2.
Access Data Byte 4 to 7
0: Data bytes 4-7 unchanged.
1: Transfer data bytes 4-7 in message object to CANIFnDB1 and
CANIFnDB2.
Description
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.
Write, Not Read
0: Read.
1: Write. Transfer data from the message buffer registers to the message
object address specified by the CANIFnCRQ register.
Access Mask Bits
0: Mask bits unchanged.
1: Transfer IDMask + Dir + MXtd to message object.
reserved
WRNRD
RO
23
W
0
7
0
A read access to a message object can be combined with the
reset of the control bits IntPdn and NewDat. The values of
these bits that are transferred to the CANIFnMCTL register
always reflect the status before resetting these bits.
Mask
RO
22
W
0
6
0
Arb
RO
21
W
0
5
0
Control
RO
20
W
0
4
0
reserved
RO
RO
19
0
3
0
TxRqst
RO
18
W
0
2
0
July 25, 2008
DataA
RO
17
W
0
1
0
DataB
RO
16
W
0
0
0