Controller area network (bxCAN) RM0008
683/1128 DocID13902 Rev 15
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.
Note: Please refer to Figure 229: Filter bank scale configuration - register organization on
page 657
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 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
FBM2
7
FBM2
6
FBM2
5
FBM2
4
FBM2
3
FBM2
2
FBM2
1
FBM2
0
FBM1
9
FBM1
8
FBM1
7
FBM1
6
rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
FBM15 FBM14 FBM13 FBM12 FBM11 FBM10 FBM9 FBM8 FBM7 FBM6 FBM5 FBM4 FBM3 FBM2 FBM1 FBM0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:0 FBMx
: 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.
Note: Bits 27:14 are available in connectivity line devices only and are reserved otherwise.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
FSC2
7
FSC2
6
FSC2
5
FSC2
4
FSC2
3
FSC2
2
FSC2
1
FSC2
0
FSC1
9
FSC1
8
FSC1
7
FSC1
6
rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
FSC15 FSC14 FSC13 FSC12 FSC11 FSC10 FSC9 FSC8 FSC7 FSC6 FSC5 FSC4 FSC3 FSC2 FSC1 FSC0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:0 FSCx
: Filter scale configuration
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.
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