W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 18

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Multi-Mode Parallel Port, continued
PD0
PD1
STB
AFD
SYMBOL
PIN
20
19
10
9
OD
OD
OD
OD
I/O
I/O
I/O
IN
IN
IN
IN
-
-
24t
24t
12
12
12
12
t
t
t
t
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 the description of the parallel port for the definition of
this pin in ECP and EPP mode.
EXTENSION FDD MODE: RWC2
This pin is for Extension FDD B; its function is the same as that
of the RWC pin.
EXTENSION 2FDD MODE: RWC2
This pin is for Extension FDD A and B; its function is the same as
that of the RWC pin.
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 the description
of the parallel port for the definition of this pin in ECP and EPP
mode.
EXTENSION FDD MODE: No Connection
This pin is a tri-state output.
EXTENSION 2FDD MODE: No Connection
This pin is a tri-state output.
PRINTER MODE: PD0
Parallel port data bus bit 0. Refer to the description of the parallel
port for the 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 that of the INDEX pin. This pin 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 INDEX pin. This pin is pulled high internally.
PRINTER MODE: PD1
Parallel port data bus bit 1. Refer to the description of the parallel
port for the 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 that of the TRAK0 pin. This pin 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 TRAK0 pin. This pin is pulled high internally.
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W83877ATF/W83877ATG
FUNCTION
Publication Release Date:November 2006
Version 1.0