w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 20

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

Multi-Mode Parallel Port, continued
SLIN
ERR
ACK
SYMBOL
PIN
22
34
32
OD12
OD12
OD12
OD
OD
OD
OD
I/O
IN
IN
t
12
12
t
12
12
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 the description of the parallel port for the 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
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; its function is the same as the
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 the
description of the parallel port for the 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
EXTENSION 2FDD MODE:
This pin is for Extension FDD A and B; its function is the same as the
PRINTER MODE:
Output line for detection of printer selection. 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 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
DSB
DSB
HEAD
HEAD
STEP
pin of FDC.
pin of FDC.
pin of FDC.
pin of FDC.
pin of FDC.
- 12 -
ERR
SLIN
ACK
W83977ATF/W83977ATG
DSB2
HEAD2
STEP2
DSB2
HEAD2
STEP2
FUNCTION
STEP