W83977F-A Datasheet, PDF (19/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
4.5 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
INt
PRINTER MODE: SLCT
An active high input on this pin indicates that the printer is selected. This
pin is pulled high internally. Refer to description of the parallel port for
definition of this pin in ECP and EPP mode.
OD12 _{EXTENSION FDD MODE: WE2}
OD12
This pin is for Extension FDD B; its function is the same as the WE pin
of FDC.
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
INt
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 description
of the parallel port for definition of this pin in ECP and EPP mode.
OD12 _{EXTENSION FDD MODE: WD2}
BUSY
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.
21
INt
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 description of the parallel port
for definition of this pin in ECP and EPP mode.
OD12 _{EXTENSION FDD MODE: MOB2}
This pin is for Extension FDD B; the function of this pin is the same as
the MOB pin of FDC.
OD12
EXTENSION 2FDD MODE: MOB2
This pin is for Extension FDD A and B; the function of this pin is the
same as the MOB pin of FDC.
Publication Release Date: May 2006
-11 -
Revision 0.60