w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 17

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

FDC Interface, continued
5.3 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
DSKCHG#
SLCT
WE2#
PE
WD2#
BUSY
MOB2#
SYMBOL
SYMBOL
PIN
PIN
17
31
32
33
IN
OD
IN
OD
IN
OD
IN
ts
ts
ts
I/O
I/O
12t
12t
12t
csu
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).
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.
- 12 -
FUNCTION
FUNCTION
Publication Release Date: March, 2006
W83637HF/HG
Revision 1.6