W83877TF/W83877TG
Publication Release Date: May 2006
-9- Revision 0.7
Multi-Mode Parallel Port, continued
SYMBOL PIN I/O FUNCTION
CK
26 IN
t
PRINTER MODE:
CK
An active low input on this pin indicates that the printer has
received data and is ready to accept more data. This pin is pulled
high internally. Refer to the description of the parallel port for the
definition of this pin in ECP and EPP mode.
OD
12
EXTENSION FDD MODE:
DSB2
This pin is for the Extension FDD B; its functions are the same as
those of the
DSB pin.
OD
12
EXTENSION 2FDD MODE:
DSB2
This pin is for Extension FDD A and B; the function of this pin is
the same as that of the
DSB pin.
PE
27 IN
t
PRINTER MODE: PE
An active high input on this pin indicates that the printer has
detected the end of the paper. This pin is pulled high internally.
Refer to the description of the parallel port for the definition of
this pin in ECP and EPP mode.
OD
12
EXTENSION FDD MODE: WD2
This pin is for Extension FDD B; its function is the same as that
of the
WD pin.
OD
12
EXTENSION 2FDD MODE: WD2
This pin is for Extension FDD A and B; this function of this pin is
the same as that of the
WD pin.
SLCT 28 IN
t
PRINTER MODE: SLCT
An active high input on this pin indicates that the printer is
selected. This pin is pulled high internally. Refer to the
description of the parallel port for the definition of this pin in ECP
and EPP mode.
OD
12
EXTENSION FDD MODE: WE2
This pin is for Extension FDD B; its functions are the same as
those of the
WE
pin.
OD
12
EXTENSION 2FDD MODE: WE2
This pin is for Extension FDD A and B; this function of this pin is
the same as that of the
WE pin.
