W83977G-A Nuvoton Technology Corporation of America, W83977G-A Datasheet - Page 103
![no-image](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_sml.jpg)
W83977G-A
Manufacturer Part Number
W83977G-A
Description
IC I/O CONTROLLER 128-PQFP
Manufacturer
Nuvoton Technology Corporation of America
Datasheet
1.W83977G-A.pdf
(182 pages)
Specifications of W83977G-A
Pin Count
128
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W83977G-A
Manufacturer:
INFINEON
Quantity:
214
Company:
Part Number:
W83977G-A
Manufacturer:
Winbond
Quantity:
1 000
Company:
Part Number:
W83977G-A
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
- Current page: 103 of 182
- Download datasheet (2Mb)
8.4
In this mode, the W83977F/ AF changes the printer interface pins to FDC input/output pins, allowing
the user to install a second floppy disk drive (FDD B) through the DB-25 printer connector. The pin
assignments for the FDC input/output pins are shown in Table 5-1.
After the printer interface is set to EXTFDD mode, the following occur:
(1) Pins MOB and DSB will be forced to inactive state.
(2) Pins DSKCHG , RDATA , WP , TRAK0 , INDEX will be logically ORed with pins PD4-PD0 to serve
(3) Pins PD4-PD0 each will have an internal resistor of about 1K ohm to serve as pull-up resistor for
(4) If the parallel port is set to EXTFDD mode after the system has booted DOS or another operating
8.5
In this mode, the W83977F/G, W83977AF/AG changes the printer interface pins to FDC input/output
pins, allowing the user to install two external floppy disk drives through the DB-25 printer connector to
replace internal floppy disk drives A and B. The pin assignments for the FDC input/output pins are
shown in Table5-1.
After the printer interface is set to EXTFDD mode, the following occur:
(1) Pins MOA , DSA , MOB , and DSB will be forced to inactive state.
(2) Pins DSKCHG , RDATA , WP , TRAK0 , and INDEX will be logically ORed with pins PD4-PD0 to
(3) Pins PD4-PD0 each will have an internal resistor of about 1K ohm to serve as pull-up resistor for
(4) If the parallel port is set to EXT2FDD mode after the system has booted DOS or another operating
as input signals to the FDC.
FDD open drain/collector output.
system, a warm reset is needed to enable the system to recognize the extension floppy drive.
serve as input signals to the FDC.
FDD open drain/collector output.
system, a warm reset is needed to enable the system to recognize the extension floppy drive.
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Extension FDD Mode (EXTFDD)
Extension 2FDD Mode (EXT2FDD)
-95 -
Publication Release Date: May 2006
Revision 0.60
Related parts for W83977G-A
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![M052LBN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![NUC122ZC1AN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![NUC100LE3AN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![M058ZBN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![M058LBN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![NUC120LD2AN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet:
![NUC100RD2AN](/images/manufacturer_photos/0/4/485/nuvoton_technology_corporation_of_america_tmb.jpg)
Part Number:
Description:
Manufacturer:
Nuvoton Technology Corporation of America
Datasheet: