W83977F-A Winbond, W83977F-A Datasheet - Page 15

• Manufacturer Part Number: W83977F-A
• Manufacturer: Winbond

Specifications of W83977F-A

• Lead Free Status / RoHS Status: Not Compliant

1.5 Multi-Mode Parallel Port, continued
PD4
PD5
PD6
PD7
SYMBOL
PIN
27
26
24
23
I/O
I/O
I/O
I/O
OD
OD
I/O
IN
IN
-
-
-
-
24t
24t
24t
24t
t
t
24
24
PRINTER MODE: PD4
Parallel port data bus bit 4. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: DSKCHG2
This pin is for Extension FDD B; the function of this pin is the
same as the DSKCHG pin of FDC. It is pulled high internally.
EXTENSION 2FDD MODE: DSKCHG2
This pin is for Extension FDD A and B; this function of this pin is
the same as the DSKCHG pin of FDC. It is pulled high
internally.
PRINTER MODE: PD5
Parallel port data bus bit 5. 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: PD6
Parallel port data bus bit 6. 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: MOA2
This pin is for Extension FDD A; its function is the same as the
PRINTER MODE: PD7
Parallel port data bus bit 7. 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: DSA2
This pin is for Extension FDD A; its function is the same as the
MOA pin of FDC.
DSA pin of FDC.
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W83977F/ W83977AF
FUNCTION
Publication Release Date: February 1997
PRELIMINARY
Revision 0.53