W83697HF_05 Datasheet, PDF (13/102 Pages) Winbond – LPC I/O

W83697HF
5.3 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.
SYMBOL
PIN
I/O
FUNCTION
SLCT
WE2#
29
IN_ts PRINTER MODE:
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.}
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
30
IN_ts PRINTER MODE:
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.
WD2#
OD₁₂
EXTENSION FDD MODE: WD2#
This pin is for Extension FDD B; its function is the same as the
WD# ^{pin of FDC.}
EXTENSION 2FDD MODE: WD2#
This pin is for Extension FDD A and B; its function is the same
as the _WD# pin of FDC.
BUSY
31
IN_t PRINTER MODE:
An active high input indicates that the printer is not ready to
receive data. This pin is pulled high internally. Refer to the
description of the parallel port for definition of this pin in ECP
and EPP mode.
MOB2#
OD₁₂
EXTENSION FDD MODE: MOB2#
This pin is for Extension FDD B; its function is the same as the
MOB# pin of FDC.
EXTENSION 2FDD MODE: MOB2#
This pin is for Extension FDD A and B; its function is the same
as the MOB# pin of FDC.
- 10 -