W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 118

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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#
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
NAME
BIT
BIT
6-0
BIT
6-3
NAME
BIT
7
6
5
4
3
2
1
0
7
7
2
BIT
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
FT
7
7
0
7
0
,
WP
while the other bits remain in tri-state. The bit definitions are as follows:
6
NA
6
6
1
RY
NA
5
5
5
1
DESCRIPTION
DESCRIPTION
DESCRIPTION
-103-
T0
NA
4
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
TS
NA
3
3
3
1
Publication Release Date: March 24, 2008
DRATE1
HD
NA
2
2
2
1
W83627UHG
DRATE0
US1
NA
1
1
1
0
Revision 1.44
DENS#
HIGH
US0
NA
0
0
0
1