W83L517D Datasheet, PDF (14/138 Pages) Winbond – LPC SUPER I/O

W83L517D
1.3 Multi-Mode Parallel Port
Version 0.6
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
SYMBOL
PIN
I/O
FUNCTION
PRT_NFDD 20
#
IN_tsp3
PRT_NFDD# is the printer Not Floppy signal. It indicated the
connected device as Printer or Floppy Disk on printer port. If the
default function(Printer mode) is used, it must connect to low
level.
SLCT
21
IN_t
PRINTER MODE:
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 definition of this pin in ECP
and EPP mode.
(WE2#)
PE
22
(WD2#)
BUSY
23
(MOB2#)
OD₁₂
EXTENSION FDD MODE: WE2#
This pin is for Extension FDD B; its function is the same as the
WE# pin of FDC.
OD₁₂
EXTENSION 2FDD MODE: WE2#
This pin is for Extension FDD A and B; its function is the same
as the WE# pin of FDC.
IN_t
OD₁₂
PRINTER MODE:
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 the
WD# pin of FDC.
OD12
IN_t
OD₁₂
EXTENSION 2FDD MODE: WD2#
This pin is for Extension FDD A and B; its function is the same
as the WD# pin of FDC.
PRINTER MODE:
An active high input indicates that the printer is not ready to
receive data. This pin is pulled high internally. Refer to the
description of the parallel port for definition of this pin in ECP
and EPP mode.
EXTENSION FDD MODE: MOB2#
This pin is for Extension FDD B; its function is the same as the
MOB# pin of FDC.
OD12
EXTENSION 2FDD MODE: MOB2#
This pin is for Extension FDD A and B; its function is the same
as the MOB# pin of FDC.
7
Publication Release Date: Apr. 2000
Revision 0.60