W83627EG Nuvoton Technology Corporation of America, W83627EG Datasheet - Page 142

• Manufacturer Part Number: W83627EG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EG

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

8.2
There are several status, data, and control registers in the W83627EHF/EHG/EF/EG. These registers
are defined below, and the rest of this section provides more details about each one of them.
8.2.1
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:
INIT PENDING (Bit 7):
This bit indicates the value of the floppy disk interrupt output.
RESERVED (Bit 6)
STEP (Bit 5):
Register Descriptions
base address + 0
base address + 1
base address + 2
base address + 3
base address + 4
base address + 5
base address + 7
Status Register A (SA Register) (Read base address + 0)
ADDRESS
OFFSET
7
6
5
DT (FIFO) REGISTER
SB REGISTER
4
MS REGISTER
SA REGISTER
TD REGISTER
DI REGISTER
3
W83627EHF/EF, W83627EHG/EG
READ
-131-
2
1
0
REGISTER
DIR
WP#
INDEX#
HEAD
TRAK0#
STEP
DRV2#
INIT PENDING
Publication Release Date: April 7, 2009
DT (FIFO) REGISTER
DO REGISTER
DR REGISTER
CC REGISTER
TD REGISTER
WRITE
Version 1.94