W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 110

• 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

Along with the SB register, the SA register is used to monitor several disk-interface pins in PS/2 and
Model 30 modes. In PS/2 mode, the bit definitions for this register are as follows:
In PS/2 Model 30 mode, the bit definitions for this register are as follows:
DEFAULT
DEFAULT
NAME
BIT
NAME
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
BIT
BIT
INIT PENDING . Indicates the value of the floppy disk interrupt output.
DRV2#.
0: A second drive has been installed.
1: No second drive is installed.
STEP. Indicates the complement of the STEP# output.
TRAK0#. Indicates the value of the TRAK# input.
HEAD. Indicates the complement of the HEAD# output.
0: Side 0.
1: Side 1.
INDEX#. Indicates the value of the INDEX# output.
WP#.
0: The disk is write-protected.
1: The disk is not write-protected.
DIR. Indicates the direction of head movement.
0: Outward direction.
1: Inward direction.
INIT PENDING. Indicates the value of the floppy disk interrupt output.
DRQ. Indicates the value of the DRQ output pin.
SETP F/F. indicates the complement of latched STEP# output.
TRAK0. Indicates the complement of the TRAK0# input.
HEAD#. Indicates the value of the HEAD# output.
0: Side 1.
1: Side 0.
INDEX. Indicates the complement of the INDEX# output.
WP.
0: The disk is not write-protected.
PENDING
PENDING
INIT
INIT
7
0
7
0
DRV 2#
DRQ
6
0
6
0
STEP F/F
STEP
NA
NA
5
5
TRAK0#
DESCRIPTION
DESCRIPTION
TRAK0
-95-
4
1
4
0
HEAD#
HEAD
NA
NA
3
3
Publication Release Date: March 24, 2008
INDEX#
INDEX
2
1
2
0
W83627UHG
WP#
WP
1
1
1
0
Revision 1.44
DIR#
DIR
NA
NA
0
0