Datasheet

PIC18F6585/8585/6680/8680

DS30491D-page 318  2003-2013 Microchip Technology Inc.

23.2.5 CAN MODULE I/O CONTROL

This register controls the operation of the CAN module’s

I/O pins in relation to the rest of the microcontroller.

R/W-0R/W-0R/W-0R/W-0 U-0 U-0 U-0 U-0

TX2SRC TX2EN ENDRHI CANCAP

— — — —

bit 7 bit 0

bit 7 TX2SRC: CANTX2 Pin Data Source bit

1 = CANTX2 pin will output the CAN clock

0 = CANTX2 pin will output CANTX1

bit 6 TX2EN: CANTX2 Pin Enable bit

1 = CANTX2 pin will output CANTX1

or CAN clock as selected by TX2SRC bit

0 = CANTX2 pin will have digital I/O function

bit 5 ENDRHI: Enable Drive High bit

(1)

1 = CANTX pin will drive VDD when recessive

0 = CANTX pin will be tri-state when recessive

bit 4 CANCAP: CAN Message Receive Capture Enable bit

1 = Enable CAN capture, CAN message receive signal replaces input on RC2/CCP1

0 = Disable CAN capture, RC2/CCP1 input to CCP1 module

bit 3-0 Unimplemented: Read as ‘0’

Note 1: Always set this bit when using differential bus to avoid signal crosstalk in CANTX

from other nearby pins.

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

18F8680.book Page 318 Tuesday, January 29, 2013 1:32 PM