W83637HF Datasheet, PDF (17/149 Pages) Winbond – LPC I/O

W83637HF
FDC Interface, continued
SYMBOL PIN
DSKCHG#
17
I/O
INcsu
FUNCTION
Diskette change. This signal is active low at power on and
whenever the diskette is removed. This input pin is pulled up
internally by a 1 KΩ resistor. The resistor can be disabled by bit
7 of L0-CRF0 (FIPURDWN).
5.3 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
SYMBOL
SLCT
WE2#
PE
WD2#
BUSY
MOB2#
PIN
I/O
31 INts
OD_12t
32 INts
OD_12t
33 IN_ts
OD_12t
FUNCTION
PRINTER MODE:
An active high input on this pin indicates that the printer is
selected. Refer to the description of the parallel port for definition
of this pin in ECP and EPP mode.
EXTENSION FDD MODE: WE2#
This pin is for Extension FDD B; its function is the same as the
WE# ^{pin of FDC.}
EXTENSION 2FDD MODE: WE2#
This pin is for Extension FDD A and B; its function is the same as
the _WE# pin of FDC.
PRINTER MODE:
An active high input on this pin indicates that the printer has
detected the end of the paper. 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.}
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. 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.
EXTENSION 2FDD MODE: MOB2#
This pin is for Extension FDD A and B; its function is the same as
the MOB# pin of FDC.
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Publication Release Date: June 25, 2003
Revision 1.3