ST STM32F205 series Reference Manual page 827

RM0033
CAN receive FIFO mailbox identifier register (CAN_RIxR) (x=0..1)
Address offsets: 0x1B0, 0x1C0
Reset value: 0xXXXX XXXX
All RX registers are write protected.
31 30 29
r r r
15 14 13
r r r
Bits 31:21 STID[10:0]/EXID[28:18]
Bits 20:3 EXID[17:0]
Bit 2 IDE
Bit 1 RTR
Bit 0 Reserved, must be kept at reset value.
28 27 26 25
STID[10:0]/EXID[28:18]
r r r r
12 11 10 9
EXID[12:0]
r r r r
:
Standard identifier or extended identifier
The standard identifier or the MSBs of the extended identifier (depending on the IDE bit
value).
:
Extended identifier
The LSBs of the extended identifier.
:
Identifier extension
This bit defines the identifier type of message in the mailbox.
0: Standard identifier.
1: Extended identifier.
:
Remote transmission request
0: Data frame
1: Remote frame
24 23 22
r r r
8 7 6
r r r
RM0033 Rev 8
Controller area network (bxCAN)
21 20 19 18
EXID[17:13]
r r r r
5 4 3 2
IDE
r r r r
17 16
r r
1 0
RTR
Res.
r
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