W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 158

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

Status Register 3 (ST3)
11.2.8 Digital Input Register (DI Register) (Read base address + 7)
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#
DEFAULT
BIT
BIT
BIT
6-0
NAME
NAME
0
7
6
5
4
3
2
1
0
7
BIT
BIT
0: No error.
MD. Missing Address Mark in Data Field.
1: If the FDC cannot find a data address mark (or the address mark has been deleted)
when reading data from the media.
0: No error.
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
FT
7
7
0
,
while the other bits remain in tri-state. The bit definitions are as follows:
NA
WP
6
6
NA
RY
5
5
W83627DHG-P/W83627DHG-PT
DESCRIPTION
DESCRIPTION
DESCRIPTION
-148-
NA
T0
4
4
RESERVED
NA
TS
3
3
Publication Release Date: July 09, 2009
NA
HD
2
2
US1
NA
1
1
Version 1.94
US0
NA
0
0