ST STM32F101 series Reference Manual page 683

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
Reserved
15 14 13
FBM15 FBM14 FBM13 FBM12 FBM11 FBM10
rw rw rw
Note: Please refer to
page 657
Bits 31:28
Bits 27:0 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
Reserved
15 14 13
FSC15 FSC14 FSC13 FSC12 FSC11 FSC10
rw rw rw
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:0 FSCx
Note: Bits 27:14 are available in connectivity line devices only and are reserved otherwise.
683/1128
28 27 26 25
FBM2 FBM2 FBM2
7 6 5
rw rw rw
12 11 10 9
FBM9
rw rw rw rw
Figure 229: Filter bank scale configuration - register organization on
Reserved, must be kept at reset value.
:
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
FSC2 FSC2 FSC2
7 6 5
rw rw rw
12 11 10 9
FSC9
rw rw rw rw
:
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
DocID13902 Rev 15
24 23 22
FBM2 FBM2 FBM2 FBM2
4 3 2
rw rw rw rw
8 7 6
FBM8 FBM7 FBM6 FBM5
rw rw rw
24 23 22
FSC2 FSC2 FSC2 FSC2
4 3 2
rw rw rw rw
8 7 6
FSC8 FSC7 FSC6 FSC5
rw rw rw
21 20 19 18
FBM2 FBM1 FBM1
1 0 9 8
rw rw rw
5 4 3 2
FBM4 FBM3 FBM2
rw rw rw rw
21 20 19 18
FSC2 FSC1 FSC1
1 0 9 8
rw rw rw
5 4 3 2
FSC4 FSC3 FSC2
rw rw rw rw
RM0008
17 16
FBM1 FBM1
7 6
rw rw
1 0
FBM1 FBM0
rw rw
17 16
FSC1 FSC1
7 6
rw rw
1 0
FSC1 FSC0
rw rw