W83977ATF Datasheet, PDF (14/207 Pages) Winbond – WINBOND I/O

1.5 Multi-Mode Parallel Port, continued
SYMBOL PIN
I/O
SLIN
32
OD₁₂
INIT
OD₁₂
OD₁₂
33
OD₁₂
AFD
OD₁₂
OD₁₂
35
OD₁₂
STB
OD₁₂
OD₁₂
36
OD₁₂
-
-
W83977ATF
PRELIMINARY
FUNCTION
PRINTER MODE: SLIN
Output line for detection of printer selection. 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: STEP2
This pin is for Extension FDD B; its function is the same as the
STEP pin of FDC.
EXTENSION 2FDD MODE: STEP2
This pin is for Extension FDD A and B; its function is the same
as the STEP pin of FDC.
PRINTER MODE: INIT
Output line for the printer initialization. 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: DIR2
This pin is for Extension FDD B; its function is the same as the
DIR pin of FDC.
EXTENSION 2FDD MODE: DIR2
This pin is for Extension FDD A and B; its function is the same
as the DIR pin of FDC.
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: DRVDEN0
This pin is for Extension FDD B; its function is the same as the
DRVDEN0 pin of FDC.
EXTENSION 2FDD MODE: DRVDEN0
This pin is for Extension FDD A and B; its function is the same
as the DRVDEN0 pin of FDC.
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: This pin is a tri-state output.
EXTENSION 2FDD MODE: This pin is a tri-state output.
Publication Release Date: April 1998
-13 -
Revision 0.52