MCP2510-EST datasheet(40/76 Pages) MICROCHIP

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MCP2510

DS21291C-page 40

Preliminary

 2000 Microchip Technology Inc.

CNF2 - Configuration Register2 (ADDRESS: 29h)

CNF3 - Configuration Register 3 (ADDRESS: 28h)

R/W-0

BTLMODE

SAM

PHSEG12 PHSEG11 PHSEG10 PRSEG2 PRSEG1 PRSEG0

R = Readable bit

W = Writable bit

C = Bit can be cleared by

MCU but not set

U = Unimplemented -

reads as ‘0’

- n = Value at POR

reset

bit 7

bit 0

bit 7:

BTLMODE: Phase Segment 2 Bit Time Length

1 = Length of Phase Seg 2 determined by PHSEG22:PHSEG20 bits of CNF3

0 = Length of Phase Seg 2 is the greater of Phase Seg 1 and IPT (2T

bit 6:

SAM: Sample Point Configuration

1 = Bus line is sampled three times at the sample point

0 = Bus line is sampled once at the sample point

bit 5-3:

PHSEG1<2:0>: Phase Segment 1 Length

111 = Length = 8 x T

000 = Length = 1 x T

bit 2-0

PRSEG<2:0>: Propagation Segment Length

111 = Length = 8 x T

000 = Length = 1 x T

U-0

R/W-0

U-0

R/W-0

—

WAKFIL

—

PHSEG22 PHSEG21 PHSEG20

R = Readable bit

W = Writable bit

C = Bit can be cleared by

MCU but not set

U = Unimplemented -

reads as ‘0’

- n = Value at POR reset

bit 7

bit 0

bit 7:

Unimplemented: Reads as ’0’

bit 6:

WAKFIL:

0 = Wake-up filter disabled

1 = Wake-up filter enabled

bit 5-3:

Unimplemented: Reads as ’0’

bit 2-0

PHSEG2<2:0>: Phase Segment 2 Length

111 = Length = 8 x TQ

bit 000 = Length = 1 x TQ

Note: Minimum valid setting for Phase Segment 2 is 2TQ

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