W83787IF Datasheet, PDF (8/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83787IF
Multi-Mode Parallel Port, continued
SYMBOL PIN I/O
ACK
26
I
OD
I
OD
_
PE
27
I
OD
O
OD
_
FUNCTION
PRINTER MODE: ACK
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.
EXTENSION FDD MODE: DSB2
This pin is for the Extension FDD B; its functions are the same as
those of the DSB pin.
EXTENSION ADAPTER MODE: XDRQ
DMA request generated by the Extension Adapter. An active high
input.
EXTENSION 2FDD MODE: DSB2
This pin is for Extension FDD A and B; this function of this pin is the
same as that of the DSB pin.
JOYSTICK MODE: NC pin.
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.
EXTENSION FDD MODE: WD2
This pin is for Extension FDD B; its function is the same as that of the
WD pin.
EXTENSION ADAPTER MODE: XA0
This pin is system address A0 for the Extension Adapter.
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.
JOYSTICK MODE: NC pin.
Publication Release Date:Sep 1995
-8-
Revision A1