DCAN Registers
23.4.24 MSGVAL_X Register (offset = C0h) [reset = 0h]
MSGVAL_X is shown in
and described in
.
With the message valid X register, the CPU can detect if one or more bits in the different message valid
registers are set. Each bit of this register represents a group of eight message objects. If at least one of
the MsgVal bits of these message objects are set, the corresponding bit in the message valid X register
will be set. Example 3. Bit 0 of the message valid X register represents byte 0 of the message valid 1
register. If one or more bits in this byte are set, bit 0 of the message valid X register will be set.
Figure 23-42. MSGVAL_X Register
31
30
29
28
27
26
25
24
Reserved
R-0h
23
22
21
20
19
18
17
16
Reserved
R-0h
15
14
13
12
11
10
9
8
MsgValReg8
MsgValReg7
MsgValReg6
MsgValReg5
R-0h
R-0h
R-0h
R-0h
7
6
5
4
3
2
1
0
MsgValReg4
MsgValReg3
MsgValReg2
MsgValReg1
R-0h
R-0h
R-0h
R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 23-37. MSGVAL_X Register Field Descriptions
Bit
Field
Type
Reset
Description
31-16
Reserved
R
0h
15-14
MsgValReg8
R
0h
MsgValReg8
13-12
MsgValReg7
R
0h
MsgValReg7
11-10
MsgValReg6
R
0h
MsgValReg6
9-8
MsgValReg5
R
0h
MsgValReg5
7-6
MsgValReg4
R
0h
MsgValReg4
5-4
MsgValReg3
R
0h
MsgValReg3
3-2
MsgValReg2
R
0h
MsgValReg2
1-0
MsgValReg1
R
0h
MsgValReg1
3950
Controller Area Network (CAN)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated