LM3S8930 Luminary Micro, Inc, LM3S8930 Datasheet - Page 414
LM3S8930
Manufacturer Part Number
LM3S8930
Description
Lm3s8930 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S8930.pdf
(526 pages)
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Reset
Reset
Type
Type
Controller Area Network (CAN) Module
CAN Message 1 Valid (CANMSG1VAL)
CAN0 base: 0x4004.0000
CAN1 base: 0x4004.1000
Offset 0x160
Type RO, reset 0x0000.0000
414
Bit/Field
31:16
15:0
RO
RO
31
15
0
0
Register 36: CAN Message 1 Valid (CANMSG1VAL), offset 0x160
Register 37: CAN Message 2 Valid (CANMSG2VAL), offset 0x164
The CANMSG1VAL and CANMSG2VAL registers hold the MsgVal bits of the 32 message objects.
By reading these bits, the CPU can check which message object is valid. The message value of a
specific message object can be changed with the CAN IFn Message Control (CANIFnMCTL)
register.
The CANMSG1VAL register contains the MsgVal bit of the first 16 message objects in the message
RAM; the CANMSG2VAL register contains the MsgVal bit of the second 16 message objects in
the message RAM.
RO
RO
30
14
0
0
reserved
RO
RO
29
13
MsgVal
0
0
Name
RO
RO
28
12
0
0
RO
RO
27
11
0
0
Type
RO
RO
RO
RO
26
10
0
0
0x0000
Reset
0x00
RO
RO
25
0
9
0
Preliminary
RO
RO
24
0
8
0
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.
Message Valid Bits
(of all message objects)
0: This message object is not configured and is ignored by the message
handler.
1: This message object is configured and should be considered by the
message handler.
reserved
MsgVal
RO
RO
23
0
7
0
RO
RO
22
0
6
0
RO
RO
21
0
5
0
RO
RO
20
0
4
0
RO
RO
19
0
3
0
RO
RO
18
0
2
0
July 25, 2008
RO
RO
17
0
1
0
RO
RO
16
0
0
0
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