w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 12

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

1.4 Infrared Interface
1.5 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
IRRX
IRTX
SLCT
PE
SYMBOL
SYMBOL
PIN
PIN
37
38
18
19
OUT
OD
OD
OD
OD
IN
I/O
I/O
IN
IN
cs
t
12
12
t
12
12
12t
Infrared Receiver input.
Infrared Transmitter Output.
PRINTER MODE: SLCT
An active high input on this pin indicates that the printer is
selected. This pin is pulled high internally. Refer to the
description of the parallel port for definition of this pin in ECP
and EPP mode.
EXTENSION FDD MODE: WE2
This pin is for Extension FDD B; its function is the same as the
EXTENSION 2FDD MODE: WE2
This pin is for Extension FDD A and B; its function is the same
as the WE pin of FDC.
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 the
EXTENSION 2FDD MODE: WD2
This pin is for Extension FDD A and B; its function is the same
as the WD pin of FDC.
WE
WD pin of FDC.
pin of FDC.
-11 -
FUNCTION
FUNCTION
Publication Release Date: April 1998
W83977ATF
PRELIMINARY
Revision 0.52