W83977ATF Datasheet, PDF (12/207 Pages) Winbond – WINBOND I/O

W83977ATF
PRELIMINARY
1.4 Infrared Interface
SYMBOL
IRRX
IRTX
PIN
I/O
FUNCTION
37
IN_cs Infrared Receiver input.
38 OUT_12t Infrared Transmitter Output.
1.5 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
SYMBOL PIN
I/O
FUNCTION
SLCT
18
IN_t 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.
OD₁₂
EXTENSION FDD MODE: WE2
This pin is for Extension FDD B; its function is the same as the
WE pin of FDC.
OD₁₂
EXTENSION 2FDD MODE: WE2
This pin is for Extension FDD A and B; its function is the same
as the WE pin of FDC.
PE
19
IN_t 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.
OD₁₂
EXTENSION FDD MODE: WD2
This pin is for Extension FDD B; its function is the same as the
WD pin of FDC.
OD₁₂
EXTENSION 2FDD MODE: WD2
This pin is for Extension FDD A and B; its function is the same
as the WD pin of FDC.
Publication Release Date: April 1998
-11 -
Revision 0.52