MCP2517FD datasheet(44/98 Pages) MICROCHIP

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MCP2517FD

DS20005688B-page 44

 2017-2018 Microchip Technology Inc.

CiTEFCON – TRANSMIT EVENT FIFO CONTROL REGISTER

U-0

R/W-0

—

—FSIZE<4:0>( 1)

bit 31

bit 24

U-0

—

bit 23

bit 16

U-0

S/HC-1

U-0

S/HC-0

—

FRESET

—UINC

bit 15

bit 8

U-0

R/W-0

U-0

R/W-0

—

TEFTSEN( 1)

—

TEFOVIE

TEFFIE

TEFHIE

TEFNEIE

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 31-29

Unimplemented:

Read as ‘0’

bit 28-24

FSIZE<4:0>:

FIFO Size bits( 1)

0_0000

= FIFO is 1 Message deep

0_0001

= FIFO is 2 Messages deep

0_0010

= FIFO is 3 Messages deep

...

1_1111

= FIFO is 32 Messages deep

bit 23-11

Unimplemented:

Read as ‘0’

bit 10

FRESET

: FIFO Reset bit

= FIFO will be reset when bit is set, cleared by hardware when FIFO was reset. The user should

wait for this bit to clear before taking any action.

= No effect

bit 9

Unimplemented:

Read as ‘0’

bit 8

UINC

: Increment Tail bit

When this bit is set, the FIFO tail will increment by a single message.

bit 7-6

Unimplemented:

Read as ‘0’

bit 5

TEFTSEN

: Transmit Event FIFO Time Stamp Enable bit( 1)

= Time Stamp objects in TEF

= Don’t Time Stamp objects in TEF

bit 4

Unimplemented:

Read as ‘0’

bit 3

TEFOVIE

: Transmit Event FIFO Overflow Interrupt Enable bit

= Interrupt enabled for overflow event

= Interrupt disabled for overflow event

bit 2

TEFFIE

: Transmit Event FIFO Full Interrupt Enable bit

= Interrupt enabled for FIFO full

= Interrupt disabled for FIFO full

Note 1:

These bits can only be modified in Configuration mode.

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