W83787IF Datasheet, PDF (11/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83787IF
Multi-Mode Parallel Port, continued
SYMBOL PIN I/O
FUNCTION
AFD
20 OD _{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.
OD ^{EXTENSION FDD MODE: RWC2}
This pin is for Extension FDD B; its function is the same as that of the
RWC pin.
O ^{EXTENSION ADAPTER MODE: XRD}
This pin is the I/O read command for the Extension Adapter.
When the Extension Adapter base address is written to the Extension
Adapter address register, XRD and XWR go low simultaneously so
that the command register on the Extension Adapter can latch the
same base address.
EXTENSION 2FDD MODE: RWC2
OD
This pin is for Extension FDD A and B; its function is the same as that
of the RWC pin.
JOYSTICK MODE: VDD for joystick.
O
STB
19 OD _{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.
O ^{EXTENSION ADAPTER MODE: XWR}
This pin is the I/O write command for the Extension Adapter.
When the Extension Adapter base address is written to the Extension
Adapter address register, XRD and XWR go low simultaneously so
that the command register on the Extension Adapter can latch the
same base address.
- EXTENSION 2FDD MODE: This pin is a tri-state output.
O ^{JOYSTICK MODE: VDD for joystick.}
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Publication Release Date:Sep 1995
Revision A1