W83977F Datasheet, PDF (23/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
PRELIMINARY
1.5 Multi-Mode Parallel Port, continued
SYMBOL PIN
I/O
ACK
22
IN_t
ERR
OD₁₂
OD₁₂
34
IN_t
SLIN
OD₁₂
OD₁₂
32
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
HEADpin 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.
OD₁₂
OD₁₂
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.
Publication Release Date: March 1998
-12-
Revision 0.58