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FDC37N769 Fiches technique(PDF) 11 Page - SMSC Corporation

No de pièce FDC37N769
Description  3.3V Super I/O Controller with Infrared Support for Portable Applications
Download  137 Pages
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Fabricant  SMSC [SMSC Corporation]
Site Internet  http://www.smsc.com
Logo SMSC - SMSC Corporation

FDC37N769 Fiches technique(HTML) 11 Page - SMSC Corporation

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SMSC DS – FDC37N769
Page 11 of 137
Rev. 02-16-07
DATASHEET
TQFP
PIN #
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
72
nInitiate
Output/
FDC
nDirection
Control
(Note
3)
nINIT
nDIR
(OD14/OP1
4)/OD12
This output is bit 2 of the printer control register. This
is used to initiate the printer when low.
Refer to Parallel Port description for use of this pin in
ECP and EPP mode.
See FDC Pin definition.
74
nAutofeed
Output/
FDC
nDensity
Select
(Note
3)
nAUTOFD
nDENSEL
(OD14/OP1
4)/OD12
This output goes low to cause the printer to
automatically feed one line after each line is printed.
The nAUTOFD output is the complement of bit 1 of
the Printer Control Register.
Refer to Parallel Port description for use of this pin in
ECP and EPP mode.
See FDC Pin definition.
75
nStrobe
Output/
FDC nDrive
Select 0
(Note
3)
nSTROBE
nDS0
(OD14/OP1
4)/OD12
An active low pulse on this output is used to strobe
the printer data into the printer.
The nSTROBE
output is the complement of bit 0 of the Printer Control
Register.
Refer to Parallel Port description for use of this pin in
ECP and EPP mode.
See FDC Pin definition.
59
Busy/
FDC
nMotor On
1
BUSY
nMTR1
I/OD12
This is a status output from the printer, a high
indicating that the printer is not ready to receive new
data.
Bit 7 of the Printer Status Register is the
complement of the BUSY input. Refer to Parallel Port
description for use of this pin in ECP and EPP mode.
See FDC Pin definition.
60
nAcknowl-
edge/FDC
nDrive
Select 1
nACK
nDS1
I/OD12
A low active output from the printer indicating that it
has received the data and is ready to accept new
data. Bit 6 of the Printer Status Register reads the
nACK input. Refer to Parallel Port description for use
of this pin in ECP and EPP mode.
See FDC Pin definition.
58
Paper End/
FDC nWrite
Data
PE
nWRDATA
I/OD12
Another status output from the printer, a high
indicating that the printer is out of paper. Bit 5 of the
Printer Status Register reads the PE input. Refer to
Parallel Port description for use of this pin in ECP and
EPP mode.
See FDC Pin definition.
57
Printer
Selected
Status/
FDC nWrite
Gate
SLCT
nWGATE
I/OD12
This high active output from the printer indicates that
it has power on. Bit 4 of the Printer Status Register
reads the SLCT input.
Refer to Parallel Port
description for use of this pin in ECP and EPP mode.
See FDC Pin definition.
73
nError/FDC
nHead
Select
nERROR
nHDSEL
I/OD12
A low on this input from the printer indicates that there
is a error condition at the printer. Bit 3 of the Printer
Status register reads the nERR input.
Refer to
Parallel Port description for use of this pin in ECP and
EPP mode.
See FDC Pin definition.
69
Port Data
0/FDC
nIndex
PD0
nINDEX
IOP14/IS
Port Data 0
See FDC Pin definition.
68
Port Data
1/FDC
nTrack 0
PD1
nTRK0
IOP14/IS
Port Data 1
See FDC Pin definition.
67
Port Data
2/FDC
nWrite
Protected
PD2
nWRTPRT
IOP14/IS
Port Data 2
See FDC Pin definition.


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