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FDC37C669FR Ver la hoja de datos (PDF) - SMSC -> Microchip

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FDC37C669FR Datasheet PDF : 172 Pages
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QFP
PIN
NO.
77
NAME
nStrobe
Output
DESCRIPTION OF PIN FUNCTIONS
SYMBOL
nSTROBE
BUFFER
TYPE
OD24
DESCRIPTION
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.
61 Busy
BUSY
62 nAcknowledge nACK
60 Paper End
PE
59 Printer
Selected
Status
SLCT
75 nError
nERROR
0P24
I
I
I
I
I
Refer to Parallel Port description for use
of this pin in ECP and EPP mode.
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.
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.
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.
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.
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.
12

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