RM0365 Datasheet, PDF (995/1076 Pages) STMicroelectronics – This reference manual targets application developers

Controller area network (bxCAN)
RM0365
CAN receive FIFO mailbox data length control and time stamp register
(CAN_RDTxR) (x = 0..1)
Address offsets: 0x1B4, 0x1C4
Reset value: 0xXXXX XXXX
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]
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7
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5
4
3
2
1
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FMI[7:0]
Res. Res. Res. Res.
DLC[3:0]
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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 31.7.4: Identifier
filtering on page 969 - Filter Match Index paragraph.
Bits 7:4 Reserved, must be kept at reset value.
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.
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