W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 115

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Table 8-2
Table 8-3
FIPURDWN (Bit 4):
This bit controls the internal pull-up resistors of the FDC input pins RDATA , INDEX , TRAK0 ,
FDCPWD (Bit 3):
This bit controls the power to the FDC.
Bit 2: Reserved.
FDCTRI (Bit 1):
This bit enables or disables the tri-state outputs of the FDC in power-down mode.
Bit 0: Reserved.
DSKCHG , and WP .
Bit 7
Bit 7
0
0
0
0
1
0
0
0
0
1
0
1
0
1
0
1
Bit 6
Bit 6
DO REGISTER ( 3F2H )
0
0
0
1
0
0
0
0
1
0
DO REGISTER ( 3F2H )
The internal pull-up resistors of FDC are turned on. (default)
The internal pull-up resistors of FDC are turned off.
Power is supplied to the FDC. (default)
Puts the FDC in power-down mode.
The output pins of the FDC will not be tri-stated when FDC is in power-down mode.
The output pins of the FDC will be tri-stated when FDC is in power-down mode.
Bit 5
Bit 5
0
0
1
0
0
0
0
1
0
0
Bit 4
Bit 4
0
1
0
0
0
1
0
0
0
0
Bit 1
Bit 1
X
0
0
1
1
0
0
0
0
1
Bit 0
Bit 0
X
0
1
0
1
0
0
1
1
1
- 108 -
MOB
MOB
1
0
0
0
0
1
1
0
1
1
W83877ATF/W83877ATG
MOA
MOA
1
0
1
1
1
1
0
0
0
0
DSB
DSB
1
0
1
1
1
x
0
0
1
1
DSA
DSA
0
1
0
1
x
0
1
1
1
1
SELECTED
SELECTED
FDD C
FDD D
FDD B
DRIVE
FDD A
FDD A
FDD B
DRIVE
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