w83977f Winbond Electronics Corp America, w83977f Datasheet - Page 24
w83977f
Manufacturer Part Number
w83977f
Description
Plug & Play 1.0a Compliant
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977F.pdf
(181 pages)
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1.5 Multi-Mode Parallel Port, continued
INIT
PD0
AFD
STB
SYMBOL
PIN
33
35
36
31
I/O
OD
OD
OD
OD
OD
OD
OD
I/O
IN
IN
-
-
24t
12
12
12
12
12
12
12
t
t
PRINTER MODE: INIT
Output line for the printer initialization. This pin is pulled high
internally. Refer to description of the parallel port for definition
of this pin in ECP and EPP mode.
EXTENSION FDD MODE: DIR2
This pin is for Extension FDD B; its function is the same as the
DIR pin of FDC.
EXTENSION 2FDD MODE: DIR2
This pin is for Extension FDD A and B; its function is the same
as the DIR pin of FDC.
PRINTER MODE: AFD
An active low output from this pin causes the printer to auto feed
a line after a line is printed. This pin is pulled high internally.
Refer to description of the parallel port for definition of this pin in
ECP and EPP mode.
EXTENSION FDD MODE: DRVDEN0
This pin is for Extension FDD B; its function is the same as the
DRVDEN0 pin of FDC.
EXTENSION 2FDD MODE: DRVDEN0
This pin is for Extension FDD A and B; its function is the same
as the DRVDEN0 pin of FDC.
PRINTER MODE: STB
An active low output is used to latch the parallel data into the
printer. This pin is pulled high internally. Refer to description of
the parallel port for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: This pin is a tri-state output.
PRINTER MODE: PD0
Parallel port data bus bit 0. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: INDEX2
This pin is for Extension FDD B; the function of this pin is the
same as the INDEX pin of FDC. It is pulled high internally.
EXTENSION 2FDD MODE: INDEX2
This pin is for Extension FDD A and B; the function of this pin is
the same as the INDEX pin of FDC. It is pulled high internally.
EXTENSION 2FDD MODE: This pin is a tri-state output.
W83977F/ W83977AF
FUNCTION
Publication Release Date: March 1998
PRELIMINARY
-13 -
Revision 0.58
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