W83977EF Winbond Electronics Corp America, W83977EF Datasheet - Page 43
W83977EF
Manufacturer Part Number
W83977EF
Description
Description = W83877TF Plus Kbc, GP I/O, Wake-Up, Power Fail Resume ;; Package = QFP 128
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977EF.pdf
(150 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W83977EF-AW
Manufacturer:
Winbond
Quantity:
10
Company:
Part Number:
W83977EF-AW
Manufacturer:
WINBOND
Quantity:
188
Part Number:
W83977EF-AW
Manufacturer:
WINBOND/华邦
Quantity:
20 000
- Current page: 43 of 150
- Download datasheet (737Kb)
The Digital Output Register is a write-only register controlling drive motors, drive selection, DRQ/IRQ
enable, and FDC resetting. All the bits in this register are cleared by the MR pin. The bit definitions are
as follows:
This register is used to assign a particular drive number to the tape drive support mode of the data
separator. This register also holds the media ID, drive type, and floppy boot drive information of the
floppy disk drive. In normal floppy mode, this register includes only bit 0 and 1. The bit definitions are
as follows:
If three mode FDD function is enabled (EN3MODE = 1 in CR9), the bit definitions are as follows:
2.2.3 Digital Output Register (DO Register) (Write base address + 2)
2.2.4 Tape Drive Register (TD Register) (Read base address + 3)
7
6
5
7
4
6
X
7
3
X
5
6
5
X
2
4
X
4
3
1-0
-37 -
X
3
2
Drive Select: 00 select drive A
Floppy Disk Controller Reset
Active low resets FDC
DMA and INT Enable
Active high enable DRQ/IRQ
Motor Enable A. Motor A on when active high
Motor Enable B. Motor B on when active high
Motor Enable C. Motor C on when active high
Motor Enable D. Motor D on when active high
X
2
1
1
0
0
Tape Sel 0
Tape Sel 1
Floppy boot drive 0
Floppy boot drive 1
Drive type ID0
Drive type ID1
Media ID0
Media ID1
10 select drive C
11 select drive D
01 select drive B
Tape sel 1
Tape sel 0
Publication Release Date: April 2003
W83977EF
Revision 1.1
Related parts for W83977EF
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Winbond H/w Monitoring Ic
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Lpc I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Smbus Gpi/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 845 Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Via P4/kt Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel 915/925 Chipsets
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond H/w Monitoring Ic
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Lpc I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Smbus Gpi/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Pa-risc Embedded Controller
Manufacturer:
Winbond Electronics Corp America
Datasheet: