W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 20

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

Multi-Mode Parallel Port, continued.
SLIN
ERR
INIT
ACK
SYMBOL
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
PIN
22
34
32
33
OD 12
OD 12
OD 12
OD 12
OD 12
OD 12
OD 12
OD 12
OD 12
OD 12
I/O
IN t
IN t
PRINTER MODE:
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:
This pin is for the Extension FDD B; its functions is the same as the
DSB
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; it functions is the same as the
DSB
PRINTER MODE:
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:
This pin is for Extension FDD B; its function is the same as the
HEAD
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; its function is the same as the
HEAD
PRINTER MODE:
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:
This pin is for Extension FDD B; its function is the same as the
pin of FDC.
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; its function is the same as the
PRINTER MODE:
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:
This pin is for Extension FDD B; its function is the same as the
of FDC.
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; its function is the same as the
DIR
STEP
pin of FDC.
pin of FDC.
pin of FDC.
pin of FDC.
pin of FDC.
pin of FDC.
-12
ERR
INIT
SLIN
ACK
DSB2
HEAD2
DIR2
STEP2
DSB2
HEAD2
DIR2
STEP2
FUNCTION
STEP
DIR
pin