w83627hg Winbond Electronics Corp America, w83627hg Datasheet - Page 19
w83627hg
Manufacturer Part Number
w83627hg
Description
Winbond Lpc I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627HG.pdf
(131 pages)
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FDC Interface, continued.
6.3
The following pins have alternate functions (Printer Mode and Extension FDD Mode), which are se-
lected by CR28 and LD1-CRF0 setting.
DSKCHG#
SYMBOL
RDATA#
HEAD#
SYMBOL
WD2#
WE2#
SLCT
PE
Multi-Mode Parallel Port
PIN
15
16
17
PIN
31
32
OD
IN
IN
I/O
OD
OD
csu
csu
IN
IN
I/O
24
ts
ts
12
12
The read data input signal from the FDD. This input pin is
pulled up internally by a 1 K ohm resistor. The resistor can be
disabled by 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 in-
ternally by a 1 K ohm r esistor. 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 se-
lected. Refer to the description of the parallel port for defini-
tion of this pin in ECP and EPP mode.
EXTENSION FDD MODE
This pin is for Extension FDD B; its function is the same as
the WE# pin of FDC.
EXTENSION 2FDD MODE
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
This pin is for Extension FDD B; its function is the same as
the WD# pin of FDC.
EXTENSION 2FDD MODE
This pin is for Extension FDD A and B; its function is the
same as the WD# pin of FDC.
- 15 -
FUNCTION
W83627HF/ F/ HG/ G
FUNCTION
Publication Release Date: June 09, 2006
Revision 2.27
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