W83977A Winbond Electronics Corp America, W83977A Datasheet - Page 110
W83977A
Manufacturer Part Number
W83977A
Description
Winbond I/O
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977A.pdf
(160 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W83977AG-A
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
Company:
Part Number:
W83977ATF-AW
Manufacturer:
Winbond
Quantity:
8
Company:
Part Number:
W83977ATF-AW
Manufacturer:
MIT
Quantity:
1 000
Company:
Part Number:
W83977ATG-AW
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
- Current page: 110 of 160
- Download datasheet (556Kb)
11.2 Logical Device 0 (FDC)
CR30 (Default 0x01
CR60, CR 61 (Default 0x03, 0xf0
CR70 (Default 0x06
CR74 (Default 0x02
CRF0 (Default 0x0E)
FDD Mode Register
register A.
Bit 7 - 1: Reserved.
Bit 0: = 1 Activates the logical device.
These two registers select FDC I/O base address [0x100:0xFF8] on 8 byte boundary.
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resource for FDC.
Bit 7 - 3: Reserved.
Bit 2 - 0: These bits select DRQ resource for FDC.
Bit 7: FIPURDWN
This bit controls the internal pull-up resistors of the FDC input pins RDATA, INDEX, TRAK0,
DSKCHG, and WP.
Bit 6: INTVERTZ
This bit determines the polarity of all FDD interface signals.
Bit 5: DRV2EN (PS2 mode only)
When this bit is a logic 0, this indicates that a second drive is installed and is reflected in status
Bit 4: Swap Drive 0, 1 Mode
Bit 3 - 2 Interface Mode
Bit 1: FDC DMA Mode
= 0 Logical device is inactive.
= 0x00 DMA0
= 0x01 DMA1
= 0x02 DMA2
= 0x03 DMA3
= 0x04 - 0x07 No DMA active
= 0
= 1
= 0
= 1
= 0
= 1
= 11
= 10 (Reserved)
= 01 PS/2
= 00 Model 30
= 0 Burst Mode is enabled
= 1 Non-Burst Mode (Default)
No Swap (Default)
Drive and Motor sel 0 and 1 are swapped.
FDD interface signals are active low.
FDD interface signals are active high.
The internal pull-up resistors of FDC are turned on.(Default)
The internal pull-up resistors of FDC are turned off.
AT Mode (Default)
if
if
if
PNPCSV
PNPCSV
PNPCSV
= 0 during POR, default 0x00 otherwise)
= 0 during POR, default 0x00 otherwise)
= 0 during POR, default 0x04 otherwise)
if
PNPCSV
-100 -
= 0 during POR, default 0x00, 0x00 otherwise)
Publication Release Date: March 1998
W83977TF
PRELIMINARY
Revision 0.62
Related parts for W83977A
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: