W83877 Winbond Electronics Corp America, W83877 Datasheet - Page 15

• Manufacturer Part Number: W83877
• Description: Winbond I/O
• Manufacturer: Winbond Electronics Corp America

1.4 Multi-Mode Parallel Port, continued
PD3
PD4
PD5
SYMBOL
PIN
12
13
14
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
IN
IN
IN
IN
-
-
-
24t
24t
24t
24t
24t
24t
t
t
t
t
t
t
PRINTER MODE: PD3
Parallel port data bus bit 3. Refer to the description of the
parallel port for the definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: RDATA2
Motor on B for Extension FDD B; the function of this pin is the
same as that of the RDATA pin. This pin is pulled high internally.
EXTENSION ADAPTER MODE: XD3
This pin is system data bus D3 for the Extension Adapter.
EXTENSION 2FDD MODE: RDATA2
This pin is for Extension FDD A and B; this function of this pin is
the same as that of the RDATA pin. This pin is pulled high
internally.
JOYSTICK MODE: NC pin
PRINTER MODE: PD4
Parallel port data bus bit 4. Refer to the description of the
parallel port for the definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: DSKCHG2
Drive select B for Extension FDD B; the function of this pin is the
same as that of DSKCHG pin. This pin is pulled high internally.
EXTENSION ADAPTER MODE: XD4
This pin is system data bus D4 for the Extension Adapter.
EXTENSION 2FDD MODE: DSKCHG2
This pin is for Extension FDD A and B; this function of this pin is
the same as that of the DSKCHG pin. This pin is pulled high
internally.
JOYSTICK MODE: JB0
This pin is the button 0 input for the joystick.
PRINTER MODE: PD5
Parallel port data bus bit 5. 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 a tri-state output.
EXTENSION ADAPTER MODE: XD5
This pin is system data bus D5 for the Extension Adapter
EXTENSION 2FDD MODE:
This pin is a tri-state output.
JOYSTICK MODE: JB1
This pin is the button 1 input for the joystick.
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FUNCTION
Publication Release Date: January 1996
W83877F
Revision A2