W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 25

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

1.5 Multi-Mode Parallel Port, continued
PD1
PD2
PD3
SYMBOL
PIN
30
29
28
I/O
I/O
I/O
I/O
IN
IN
IN
IN
IN
IN
24t
24t
24t
t
t
t
t
t
t
PRINTER MODE: PD1
Parallel port data bus bit 1. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode. .
This pin is for Extension FDD B; the function of this pin is the
same as the TRAK0 pin of FDC. It is pulled high internally..
EXTENSION. 2FDD MODE: TRAK02
This pin is for Extension FDD A and B; the function of this pin is
the same as the TRAK0 pin of FDC. It is pulled high internally.
PRINTER MODE: PD2
Parallel port data bus bit 2. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode..
EXTENSION FDD MODE: WP2
This pin is for Extension FDD B; the function of this pin is the
same as the WP pin of FDC. It is pulled high internally.
EXTENSION. 2FDD MODE: WP2
This pin is for Extension FDD A and B; the function of this pin is
the same as the WP pin of FDC. It is pulled high internally.
PRINTER MODE: PD3
Parallel port data bus bit 3. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: RDATA2
This pin is for Extension FDD B; the function of this pin is the
same as the RDATA pin of FDC. It is pulled high internally.
EXTENSION 2FDD MODE: RDATA2
This pin is for Extension FDD A and B; this function of this pin is
the same as the RDATA pin of FDC. It is pulled high internally.
EXTENSION FDD MODE: TRAK02
W83977F/ W83977AF
FUNCTION
Publication Release Date: March 1998
-14-
PRELIMINARY
Revision 0.58