W83977TF-A View Datasheet(PDF) - Winbond
Part Name
Description
Manufacturer
W83977TF-A Datasheet PDF : 160 Pages
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W83977TF
PRELIMINARY
1.5 Multi-Mode Parallel Port, continued
SYMBOL PIN
I/O
STB
36
OD12
PD0
PD1
PD2
-
-
31
I/O24t
INt
INt
30
I/O24t
INt
INt
29
I/O24t
INt
INt
FUNCTION
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.
EXTENSION 2FDD 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.
PRINTER MODE: PD1
Parallel port data bus bit 1. Refer to description of the parallel port
for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: TRAK02
This pin is for Extension FDD B; the function of this pin is the same
as the TRAK0 pin of FDC. It is pulled high internally.
EXTENSION. 2FDD MODE: TRAK02
This pin is for Extension FDD A and B; the function of this pin is the
same as the TRAK0 pin of FDC. It is pulled high internally.
PRINTER MODE: PD2
Parallel port data bus bit 2. Refer to description of the parallel port
for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: WP2
This pin is for Extension FDD B; the function of this pin is the same
as the WP pin of FDC. It is pulled high internally.
EXTENSION. 2FDD MODE: WP2
This pin is for Extension FDD A and B; the function of this pin is the
same as the WP pin of FDC. It is pulled high internally.
Publication Release Date: April 1998
-12-
Revision 0.62
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