w83627sf Winbond Electronics Corp America, w83627sf Datasheet - Page 16

• Manufacturer Part Number: w83627sf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

1.2 FDC Interface, continued
1.3
WP#
RDATA#
HEAD#
DSKCHG#
SLCT
PE
SYMBOL
SYMBOL
Multi-Mode Parallel Port
PIN
PIN
14
15
16
17
31
32
OD
OD
OD
OD
OD
IN
IN
IN
I/O
I/O
IN
IN
cs
cs
cs
24
12
12
12
12
t
t
Write protected. This active low Schmitt input from the disk drive
indicates that the diskette is write-protected. This input pin is
pulled up internally by a 1 K
disabled by bit 7 of L0-CRF0 (FIPURDWN).
The read data input signal from the FDD. This input pin is pulled
up internally by a 1 K
bit 7 of L0-CRF0 (FIPURDWN).
Head select. This open drain output determines which disk drive
head is active.
Logic 1 = side 0
Logic 0 = side 1
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 K
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.
- 9 -
resistor. The resistor can be disabled by bit
resistor. The resistor can be disabled by
FUNCTION
FUNCTION
resistor. The resistor can be
Publication Release Date: Nov. 2000
PRELIMINARY
W83627SF
Revision 0.60