W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 23

• Manufacturer Part Number: W83977AF
• Description: W83877TF Plus Kbc, Cir, RTC
• Manufacturer: Information Storage Devices, Inc

1.5 Multi-Mode Parallel Port, continued
SLIN
ERR
ACK
SYMBOL
PIN
22
34
32
OD
OD
OD
OD
OD
OD
OD
I/O
IN
IN
12
12
12
12
12
12
12
t
t
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.
EXTENSION FDD MODE: STEP2
This pin is for Extension FDD B; its function is the same as the
EXTENSION 2FDD MODE: STEP2
This pin is for Extension FDD A and B; its function is the same
as the STEP pin of FDC.
STEP pin of FDC.
W83977F/ W83977AF
FUNCTION
Publication Release Date: March 1998
-12-
PRELIMINARY
Revision 0.58