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PIC18F4685-I/SP Datasheet(PDF) 278 Page - Microchip Technology

Part # PIC18F4685-I/SP
Description  28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
PDF  484 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F4685-I/SP Datasheet(HTML) 278 Page - Microchip Technology

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PIC18F2682/2685/4682/4685
DS39761B-page 276
Preliminary
© 2007 Microchip Technology Inc.
REGISTER 23-1:
CANCON: CAN CONTROL REGISTER
Mode 0
R/W-1
R/W-0
R/W-0
R/S-0
R/W-0
R/W-0
R/W-0
U-0
REQOP2
REQOP1
REQOP0
ABAT
WIN2
WIN1
WIN0
—
Mode 1
R/W-1
R/W-0
R/W-0
R/S-0
U0
U-0
U-0
U-0
REQOP2
REQOP1
REQOP0
ABAT
—
—
—
—
Mode 2
R/W-1
R/W-0
R/W-0
R/S-0
R-0
R-0
R-0
R-0
REQOP2
REQOP1
REQOP0
ABAT
FP3
FP2
FP1
FP0
bit 7
bit 0
Legend:
S = Settable bit
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 7-5
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
bit 4
ABAT: Abort All Pending Transmissions bit
1
= Abort all pending transmissions (in all transmit buffers)
0
= Transmissions proceeding as normal
bit 3-1
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
bit 0
Unimplemented: Read as ‘0’
bit 4-0
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



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