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PIC18F258-E/LSQTP Datasheet(PDF) 207 Page - Microchip Technology

Part # PIC18F258-E/LSQTP
Description  28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
PDF  402 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F258-E/LSQTP Datasheet(HTML) 207 Page - Microchip Technology

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© 2006 Microchip Technology Inc.
DS41159E-page 205
PIC18FXX8
REGISTER 19-3:
COMSTAT: COMMUNICATION STATUS REGISTER
R/C-0
R/C-0
R-0
R-0
R-0
R-0
R-0
R-0
RXB0OVFL RXB1OVFL
TXBO
TXBP
RXBP
TXWARN RXWARN
EWARN
bit 7
bit 0
bit 7
RXB0OVFL: Receive Buffer 0 Overflow bit
1
= Receive Buffer 0 overflowed
0
= Receive Buffer 0 has not overflowed
bit 6
RXB1OVFL: Receive Buffer 1 Overflow bit
1
= Receive Buffer 1 overflowed
0
= Receive Buffer 1 has not overflowed
bit 5
TXBO: Transmitter Bus-Off bit
1
= Transmit Error Counter > 255
0
= Transmit Error Counter
≤ 255
bit 4
TXBP: Transmitter Bus Passive bit
1
= Transmission Error Counter > 127
0
= Transmission Error Counter
≤ 127
bit 3
RXBP: Receiver Bus Passive bit
1
= Receive Error Counter > 127
0
= Receive Error Counter
≤ 127
bit 2
TXWARN: Transmitter Warning bit
1
= 127
≥ Transmit Error Counter > 95
0
= Transmit Error Counter
≤ 95
bit 1
RXWARN: Receiver Warning bit
1
= 127
≥ Receive Error Counter > 95
0
= Receive Error Counter
≤ 95
bit 0
EWARN: Error Warning bit
This bit is a flag of the RXWARN and TXWARN bits.
1
= The RXWARN or the TXWARN bits are set
0
= Neither the RXWARN or the TXWARN bits are set
Legend:
R = Readable bit
W = Writable bit
C = Clearable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown



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