W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 16

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

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

4.3
The following pins have eight functions, which are controlled by bits PRTMOD0, PRTMOD1, and
PRTMOD2 of CR0 and CR9 (refer to section 8.0, Extended Functions).
BUSY
PE
ACK
SYMBOL
Multi-Mode Parallel Port
PIN
24
26
27
OD12
OD12
OD
OD
OD
OD
I/O
IN
IN
INt
t
12
12
t
12
12
PRINTER MODE: BUSY
An active high input indicates that the printer is not ready to
receive data. 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: MOB2
This pin is for Extension FDD B; the function of this pin is the
same as that of the MOB pin.
EXTENSION 2FDD MODE: MOB2
This pin is for Extension FDD A and B; the function of this pin is
the same as that of the MOB pin.
PRINTER MODE: ACK
An active low input on this pin indicates that the printer has
received data and is ready to accept more data. 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: DSB2
This pin is for the Extension FDD B; its functions are the same as
those of the DSB pin.
EXTENSION 2FDD MODE: DSB2
This pin is for Extension FDD A and B; the function of this pin is
the same as that of the DSB pin.
PRINTER MODE: PE
An active high input on this pin indicates that the printer has
detected the end of the paper. 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: WD2
This pin is for Extension FDD B; its function is the same as that
of the WD pin.
EXTENSION 2FDD MODE: WD2
This pin is for Extension FDD A and B; the function of this pin is
the same as that of the WD pin.
JOYSTICK MODE: NC pin.
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W83877ATF/W83877ATG
FUNCTION
Publication Release Date:November 2006
Version 1.0