ST72561 datasheet(205/262 Pages) STMICROELECTRONICS

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ST72561

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beCAN CONTROLLER (Cont’d)

CAN FILTER CONFIGURATION REG.1 (CFCR2)

All bits of this register are set and cleared by soft-

ware.

Read / Write

Reset Value: 0000 0000 (00h)

Bit 7 = Reserved. Forced to 0 by hardware.

Bit 6:5 = FSC5[1:0] Filter Scale Configuration

These bits define the scale configuration of Filter

Bit 4 = FACT5 Filter Active

The software sets this bit to activate filter 5. To

modify the Filter 5 registers (CF5R[0:7]) the

FACT5 bit must be cleared.

0: Filter 5 is not active

1: Filter 5 is active

Bit 3 = Reserved. Forced to 0 by hardware.

Bit 2:1 = FSC4[1:0] Filter Scale Configuration

These bits define the scale configuration of Filter

Bit 0 = FACT4 Filter Active

The software sets this bit to activate Filter 4. To

modify the Filter 4 registers (CF4R[0:7]), the

FACT4 bit must be cleared.

0: Filter 4 is not active

1: Filter 4 is active

CAN FILTER MODE REGISTER (CFMR0)

All bits of this register are set and cleared by soft-

ware.

Read / Write

Reset Value: 0000 0000 (00h)

Bit 7 = FMH3 Filter Mode High

Mode of the high registers of Filter 3.

0: High registers are in mask mode

1: High registers are in identifier list mode

Bit 6 = FML3 Filter Mode Low

Mode of the low registers of Filter 3.

0: Low registers are in mask mode

1: Low registers are in identifier list mode

Bit 5 = FMH2 Filter Mode High

Mode of the high registers of Filter 2.

0: High registers are in mask mode

1: High registers are in identifier list mode

Bit 4 = FML2 Filter Mode Low

Mode of the low registers of Filter 2.

0: Low registers are in mask mode

1: Low registers are in identifier list mode

Bit 3 = FMH1 Filter Mode High

Mode of the high registers of Filter 1.

0: High registers are in mask mode

1: High registers are in identifier list mode

Bit 2 = FML1 Filter Mode Low

Mode of the low registers of filter 1.

0: Low registers are in mask mode

1: Low registers are in identifier list mode

Bit 1 = FMH0 Filter Mode High

Mode of the high registers of filter 0.

0: High registers are in mask mode

1: High registers are in identifier list mode

Bit 0 = FML0 Filter Mode Low

Mode of the low registers of filter 0.

0: Low registers are in mask mode

1: Low registers are in identifier list mode

FSC51 FSC50 FACT5

FSC41 FSC40 FACT4

FMH3

FML3

FMH2

FML2

FMH1

FML1

FMH0

FML0

ST72561 Datasheet(PDF) 205 Page - STMicroelectronics

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