MCP2517FD datasheet(31/98 Pages) MICROCHIP

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 2017-2018 Microchip Technology Inc.

DS20005688B-page 31

MCP2517FD

CiTSCON – TIME STAMP CONTROL REGISTER

U-0

—

bit 31

bit 24

U-0

R/W-0

—

TSRES

TSEOF

TBCEN

bit 23

bit 16

U-0

R/W-0

—

TBCPRE<9:8>

bit 15

bit 8

R/W-0

TBCPRE<7:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-19

Unimplemented

: Read as ‘0’

bit 18

TSRES

: Time Stamp res bit (FD Frames only)

= at sample point of the bit following the FDF bit.

= at sample point of SOF

bit 17

TSEOF

: Time Stamp EOF bit

= Time Stamp when frame is taken valid:

- RX no error until last but one bit of EOF

- TX no error until the end of EOF

= Time Stamp at “beginning” of Frame:

- Classical Frame: at sample point of SOF

- FD Frame: see TSRES bit.

bit 16

TBCEN

: Time Base Counter Enable bit

= Enable TBC

= Stop and reset TBC

bit 15-10

Unimplemented

: Read as ‘0’

bit 9-0

TBCPRE<9:0>

: Time Base Counter Prescaler bits

1023

= TBC increments every 1024 clocks

...

= TBC increments every 1 clock

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