ST STM32L4x6 Reference Manual page 1488

Controller area network (bxCAN)
CAN filter mode register (CAN_FM1R)
Address offset: 0x204
Reset value: 0x0000 0000
This register can be written only when the filter initialization mode is set (FINIT=1) in the
CAN_FMR register.
31 30 29
Res. Res. Res. Res.
15 14 13
Res. Res. FBM13 FBM12 FBM11 FBM10
rw
Note: Please refer to
page 1462
Bits 31:14 Reserved, must be kept at reset value.
Bits 13:0 FBMx
Note: Bits 27:14 are available in connectivity line devices only and are reserved otherwise.
CAN filter scale register (CAN_FS1R)
Address offset: 0x20C
Reset value: 0x0000 0000
This register can be written only when the filter initialization mode is set (FINIT=1) in the
CAN_FMR register.
31 30 29
Res Res Res
15 14 13
Res Res FSC13 FSC12
rw
Bits 31:14 Reserved, must be kept at reset value.
Bits 13:0 FSCx
These bits define the scale configuration of Filters 13-0.
0: Dual 16-bit scale configuration
1: Single 32-bit scale configuration
Note: Bits 27:14 are available in connectivity line devices only and are reserved otherwise.
Note: Please refer to
page 1462.
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28 27 26 25
Res. Res. Res.
12 11 10 9
FBM9
rw rw rw rw
Figure 485: Filter bank scale configuration - register organization on
:
Filter mode
Mode of the registers of Filter x.
0: Two 32-bit registers of filter bank x are in Identifier Mask mode.
1: Two 32-bit registers of filter bank x are in Identifier List mode.
28 27 26 25
Res Res Res Res
12 11 10 9
FSC11 FSC10 FSC9
rw rw rw rw
:
Filter scale configuration
Figure 485: Filter bank scale configuration - register organization on
24 23 22
Res. Res. Res.
8 7 6
FBM8 FBM7 FBM6
rw rw rw
24 23 22
Res Res Res
8 7 6
FSC8 FSC7 FSC6
rw rw rw
DocID024597 Rev 3
21 20 19 18
Res. Res. Res. Res.
5 4 3 2
FBM5 FBM4 FBM3 FBM2
rw rw rw rw
21 20 19 18
Res Res Res Res
5 4 3 2
FSC5 FSC4 FSC3 FSC2
rw rw rw rw
RM0351
17 16
Res. Res.
1 0
FBM1 FBM0
rw rw
17 16
Res Res
1 0
FSC1 FSC0
rw rw