PIC18F4580-ESLASHML datasheet(301/490 Pages) MICROCHIP

301 / 490 page

DS39637D-page 301

PIC18F2480/2580/4480/4580

≤ n ≤ 5, TXnEN (BSEL0<n>) = 1](1)

R/W-0

R-0

R/W-0

TXBIF(3)

TXABT(3)

TXLARB(3)

TXERR(3)

TXREQ(2,4)

RTREN

TXPRI1(5)

TXPRI0(5)

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 7

TXBIF: Transmit Buffer Interrupt Flag bit(3)

1 = A message is successfully transmitted

0 = No message was transmitted

bit 6

TXABT: Transmission Aborted Status bit(3)

1 = Message was aborted

0 = Message was not aborted

bit 5

TXLARB: Transmission Lost Arbitration Status bit(3)

1 = Message lost arbitration while being sent

0 = Message did not lose arbitration while being sent

bit 4

TXERR: Transmission Error Detected Status bit(3)

1 = A bus error occurred while the message was being sent

0 = A bus error did not occur while the message was being sent

bit 3

TXREQ: Transmit Request Status bit(2,4)

1 = Requests sending a message; clears the TXABT, TXLARB and TXERR bits

0 = Automatically cleared when the message is successfully sent

bit 2

RTREN: Automatic Remote Transmission Request Enable bit

1 = When a remote transmission request is received, TXREQ will be automatically set

0 = When a remote transmission request is received, TXREQ will be unaffected

bit 1-0

TXPRI<1:0>: Transmit Priority bits(5)

11 = Priority Level 3 (highest priority)

10 = Priority Level 2

01 = Priority Level 1

00 = Priority Level 0 (lowest priority)

Note 1:

These registers are available in Mode 1 and 2 only.

Clearing this bit in software while the bit is set will request a message abort.

This bit is automatically cleared when TXREQ is set.

While TXREQ is set or a transmission is in progress, Transmit Buffer registers remain read-only.

These bits set the order in which the Transmit Buffer register will be transferred. They do not alter the CAN

message identifier.

PIC18F4580-E/ML Datasheet(PDF) 301 Page - Microchip Technology

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