W83877TF Datasheet, PDF (19/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
1.3 Multi-Mode Parallel Port, continued
SYMBOL PIN
I/O
ACK
26
IN_t
OD₁₂
OD₁₂
PE
27
IN_t
SLCT
OD₁₂
OD₁₂
28
IN_t
OD₁₂
OD₁₂
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 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.
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 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.
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.
EXTENSION FDD MODE: WE2
This pin is for Extension FDD B; its functions are the same as
those of the WE pin.
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.
Publication Release Date: March 1998
-9-
Version 0.61