W83977F-A Datasheet, PDF (20/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Multi-Mode Parallel Port, continued.
SYMBOL PIN
I/O
ACK
22
INt
ERR
SLIN
INIT
OD12
OD12
34
INt
OD12
OD12
32
OD12
OD12
OD12
33
OD12
OD12
OD12
FUNCTION
PRINTER MODE: ACK
An active low input on this pin indicates that the printer has received
data and is ready to accept more data. 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: DSB2
This pin is for the Extension FDD B; its functions is the same as the
DSB pin of FDC.
EXTENSION 2FDD MODE: DSB2
This pin is for Extension FDD A and B; it functions is the same as the
DSB pin of FDC.
PRINTER MODE: ERR
An active low input on this pin indicates that the printer has encountered
an error condition. 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: HEAD2
This pin is for Extension FDD B; its function is the same as the
HEAD pin of FDC.
EXTENSION 2FDD MODE: HEAD2
This pin is for Extension FDD A and B; its function is the same as the
HEAD pin of FDC.
PRINTER MODE: SLIN
Output line for detection of printer selection. 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: 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 description of the parallel port for 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.
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