ST STM32F412 Reference Manual page 961

RM0402
31 30 29
Res. Res. Res. Res.
15 14 13
FFA15 FFA14 FFA13 FFA12
rw rw rw
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:0 FFAx
CAN filter activation register (CAN_FA1R)
Address offset: 0x21C
Reset value: 0x0000 0000
31 30 29
Res. Res. Res. Res.
15 14 13
FACT FACT FACT FACT
15 14 13
rw rw rw
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:0 FACTx
The software sets this bit to activate Filter x. To modify the Filter x registers (CAN_FxR[0:7]),
the FACTx bit must be cleared or the FINIT bit of the CAN_FMR register must be set.
0: Filter x is not active
1: Filter x is active
28 27 26 25
FFA27 FFA26 FFA25
rw rw rw
12 11 10 9
FFA11 FFA10 FFA9
rw rw rw rw
:
Filter FIFO assignment for filter x
The message passing through this filter is stored in the specified FIFO.
0: Filter assigned to FIFO 0
1: Filter assigned to FIFO 1
28 27 26 25
FACT FACT FACT
27 26 25
rw rw rw
12 11 10 9
FACT FACT
FACT9 FACT8 FACT7 FACT6 FACT5 FACT4 FACT3 FACT2 FACT1 FACT0
12 11 10
rw rw rw rw
:
Filter active
24 23 22
FFA24 FFA23 FFA22 FFA21
rw rw rw
8 7 6
FFA8 FFA7 FFA6 FFA5
rw rw rw
24 23 22
FACT FACT FACT FACT
24 23 22
rw rw rw
8 7 6
rw rw rw
RM0402 Rev 6
Controller area network (bxCAN)
21 20 19 18
FFA20 FFA19 FFA18
rw rw rw rw
5 4 3 2
FFA4 FFA3 FFA2
rw rw rw rw
21 20 19 18
FACT FACT FACT
21 20 19 18
rw rw rw rw
5 4 3 2
rw rw rw rw
17 16
FFA17 FFA16
rw rw
1 0
FFA1 FFA0
rw rw
17 16
FACT FACT
17 16
rw rw
1 0
rw rw
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