RM0008
Note:
Controller area network (bxCAN)
CAN receive FIFO mailbox data length control and time stamp register
(CAN_RDTxR) (x=0..1)
Address offsets: 0x1B4, 0x1C4
Reset value: undefined
All RX registers are write protected.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
TIME[15:0]
r
15
r
14
r
13
r
12
r
11
r
10
r
9
r
8
r
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
FMI[7:0]
Reserved
DLC[3:0]
r
r
r
r
r
r
r
r
r
r
r
r
Bits 31:16 TIME[15:0] : Message time stamp
This field contains the 16-bit timer value captured at the SOF detection.
Bits 15:8 FMI[7:0] : Filter match index
This register contains the index of the filter the message stored in the mailbox passed
through. For more details on identifier filtering please refer to Section 22.7.4: Identifier
filtering on page 552 - Filter Match Index paragraph.
Bits 7:4
Reserved, forced by hardware to 0.
Bits 3:0 DLC[3:0] : Data length code
This field defines the number of data bytes a data frame contains (0 to 8). It is 0 in the case
of a remote frame request.
Doc ID 13902 Rev 9
577/995
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