W83977F-A Datasheet, PDF (21/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Multi-Mode Parallel Port, continued.
SYMBOL
AFD
PIN
I/O
35
OD12
STB
PD0
PD1
PD2
OD12
OD12
36
OD12
-
-
31
I/O24t
INt
INt
30
I/O24t
INt
INt
29
I/O24t
INt
INt
FUNCTION
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
description of the parallel port for 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 description of the parallel port for
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.
PRINTER MODE: PD0
Parallel port data bus bit 0. Refer to description of the parallel port for
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 the
INDEX pin of FDC. It 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 the INDEX pin of FDC. It is pulled high internally.
PRINTER MODE: PD1
Parallel port data bus bit 1. Refer to description of the parallel port for
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 the
TRAK0 pin of FDC. It 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 the TRAK0 pin of FDC. It is pulled high internally.
PRINTER MODE: PD2
Parallel port data bus bit 2. Refer to description of the parallel port for
definition of this pin in ECP and EPP mode..
EXTENSION FDD MODE: WP2
This pin is for Extension FDD B; the function of this pin is the same as the
WP pin of FDC. It is pulled high internally.
EXTENSION. 2FDD MODE: WP2
This pin is for Extension FDD A and B; the function of this pin is the same
as the WP pin of FDC. It is pulled high internally.
Publication Release Date: May 2006
-13 -
Revision 0.60