NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 121

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

The Digital Input Register is an 8-bit, read-only register used for diagnostic purposes. In PC/XT or PC/AT mode,
only bit 7 is checked by the BIOS. When the register is read, bit 7 shows the complement of DSKCHG#
other bits remain in tri-state. The bit definitions are as follows:
In PS/2 mode, the bit definitions are as follows:
DEFAULT
DEFAULT
9.2.8 Digital Input Register (DI Register) (Read base address + 7)
NAME
BIT
BIT
BIT
6-0
NAME
6-3
7
6
5
4
3
2
1
0
BIT
7
7
2
BIT
FT. Fault.
WP. Write protected.
RY. Ready.
T0. Track 0.
TS. Two-side.
HD. Head Address.
US1. Unit Select 1.
US0. Unit Select 0.
DSKCHG.
RESERVED. Reserved for the hard disk controller. During a read of this register, these
bits are in tri-state.
DSKCHG. Indicates the complement of the DSKCHG# input.
Always 1 during a read.
DRATE 1.
DSKCHG
DSKCHG
7
0
7
0
NA
6
6
1
NA
5
5
1
DESCRIPTION
DESCRIPTION
DESCRIPTION
NA
4
4
1
Select the data rate of the FDC. See DR
register bits 1 and 0 (Data Rate Register
(DR Register) (Write base address + 4)) for
RESERVED
-112-
NA
3
3
1
W83627UHG/NCT6627UD
DRATE1
NA
Publication Release Date: October 26, 2010
2
2
1
DRATE0
NA
1
1
0
DENS#
HIGH
NA
0
0
1
Revision 1.7
,
while the