W83977A Winbond Electronics Corp America, W83977A Datasheet - Page 19
W83977A
Manufacturer Part Number
W83977A
Description
Winbond I/O
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977A.pdf
(160 pages)
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1.5 Multi-Mode Parallel Port, continued
SLIN
INIT
AFD
SYMBOL
PIN
32
33
35
OD
OD
OD
OD
OD
OD
OD
OD
OD
I/O
12
12
12
12
12
12
12
12
12
PRINTER MODE: SLIN
Output line for detection of printer selection. 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: STEP2
This pin is for Extension FDD B; its function is the same as the
EXTENSION 2FDD MODE: STEP2
This pin is for Extension FDD A and B; its function is the same as
the STEP pin of FDC.
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.
STEP pin of FDC.
-11 -
FUNCTION
Publication Release Date: April 1998
W83977TF
PRELIMINARY
Revision 0.62
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