PIC18LF4682-I/ML 查看數據表（PDF） - Microchip Technology

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PIC18LF4682-I/ML

28/40/44-Pin Enhanced Flash Microcontrollers with ECAN™ Technology, 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2682/2685/4682/4685

REGISTER 23-1: CANCON: CAN CONTROL REGISTER

R/W-1

R/W-0

R/W-0

R/S-0

R/W-0

R/W-0

R/W-0

U-0

Mode 0

REQOP2 REQOP1 REQOP0 ABAT

WIN2

WIN1

WIN0

—

R/W-1

R/W-0

R/W-0

R/S-0

U0

U-0

U-0

U-0

Mode 1

REQOP2 REQOP1 REQOP0 ABAT

—

—

—

—

R/W-1

R/W-0

R/W-0

R/S-0

R-0

R-0

R-0

Mode 2

REQOP2 REQOP1 REQOP0 ABAT

FP3

FP2

FP1

bit 7

R-0

FP0

bit 0

Legend:

R = Readable bit

-n = Value at POR

S = Settable bit

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-5

bit 4

bit 3-1

bit 0

bit 4-0

REQOP2:REQOP0: Request CAN Operation Mode bits

1xx = Request Configuration mode

011 = Request Listen Only mode

010 = Request Loopback mode

001 = Request Disable mode

000 = Request Normal mode

ABAT: Abort All Pending Transmissions bit

1 = Abort all pending transmissions (in all transmit buffers)

0 = Transmissions proceeding as normal

Mode 0:

WIN2:WIN0: Window Address bits

These bits select which of the CAN buffers to switch into the access bank area. This allows access to the

buffer registers from any data memory bank. After a frame has caused an interrupt, the ICODE3:ICODE0

bits can be copied to the WIN3:WIN0 bits to select the correct buffer. See Example 23-2 for a code

example.

111 = Receive Buffer 0

110 = Receive Buffer 0

101 = Receive Buffer 1

100 = Transmit Buffer 0

011 = Transmit Buffer 1

010 = Transmit Buffer 2

001 = Receive Buffer 0

000 = Receive Buffer 0

Unimplemented: Read as ‘0’

Mode 1:

Unimplemented: Read as ‘0’

Mode 2:

FP3:FP0: FIFO Read Pointer bits

These bits point to the message buffer to be read.

0111:0000 = Message buffer to be read

1111:1000 = Reserved

DS39761B-page 276

Preliminary

© 2007 Microchip Technology Inc.

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