W83627EHG Nuvoton Technology Corporation of America, W83627EHG Datasheet - Page 144

• Manufacturer Part Number: W83627EHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EHG

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

DRQ (Bit 6):
This bit indicates the value of the DRQ output pin.
STEP F/F (Bit 5):
This bit indicates the complement of the latched STEP# output.
TRAK0 (Bit 4):
This bit indicates the complement of the TRAK0# input.
HEAD# (Bit 3):
This bit indicates the value of the HEAD# output.
0
1
INDEX (Bit 2):
This bit indicates the complement of the INDEX# output.
WP (Bit 1):
0
1
DIR# (Bit 0)
This bit indicates the direction of head movement.
0
1
8.2.2
Along with the SA register, the SB 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:
side 1
side 0
disk is not write-protected
disk is write-protected
inward direction
outward direction
Status Register B (SB Register) (Read base address + 1)
W83627EHF/EF, W83627EHG/EG
-133-
Publication Release Date: April 7, 2009
Version 1.94