STMicroelectronics STM32F405 Reference Manual page 1106

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 1080
Bits 31:28
Bits 27:0 FBMx
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: Please refer to
page 1080.
1106/1731
28 27 26 25
FBM27 FBM26 FBM25 FBM24 FBM23 FBM22 FBM21 FBM20 FBM19 FBM18 FBM17 FBM16
rw rw rw
12 11 10 9
FBM9
rw rw rw rw
Figure 342: 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
FSC27 FSC26 FSC25 FSC24 FSC23 FSC22 FSC21 FSC20 FSC19 FSC18 FSC17 FSC16
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
Figure 342: Filter bank scale configuration - register organization on
DocID018909 Rev 11
24 23 22 21
rw rw rw rw
8 7 6 5
FBM8 FBM7 FBM6 FBM5
rw rw rw rw
24 23 22 21
rw rw rw rw
8 7 6 5
FSC8 FSC7 FSC6 FSC5
rw rw rw rw
20 19 18 17
rw rw rw rw
4 3 2 1
FBM4 FBM3 FBM2 FBM1
rw rw rw rw
20 19 18 17
rw rw rw rw
4 3 2 1
FSC4 FSC3 FSC2 FSC1
rw rw rw rw
RM0090
16
rw
0
FBM0
rw
16
rw
0
FSC0
rw