W83627EHG Nuvoton Technology Corporation of America, W83627EHG Datasheet - Page 40

• 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

6. CONFIGURATION REGISTER ACCESS PROTOCOL
The W83627EHF/EHG/EF/EG uses Super I/O protocol to access configuration registers to set up
different types of configurations. The W83627EHF/EHG/EF/EG has totally twelve Logical Devices
(from Logical Device 0 to Logical Device B with the exception of Logical Device 4 for backward
compatibility) corresponding to twelve individual functions: FDC (Logical Device 0), Parallel Port
(Logical Device 1), UARTA (Logical Device 2), UARTB (Logical Device 3), Keyboard Controller
(Logical Device 5), GPIO1, GPIO6, Game Port & MIDI Port(Logical Device 7), WDTO# & PLED
(Logical Device 8), GPIO2, 3, 4, 5 & SUSLED (Logical Device 9), ACPI (Logical Device A), and
Hardware Monitor (Logical Device B),. Each Logical Device has its own configuration registers (above
CR30). The host can access those registers by writing an appropriate Logical Device Number into the
Logical Device select register at CR7.
Devices of I/O Base Address
LOGICAL DEVICE
NUMBER
0
1
2
#0
#0
Logical Device No.
Logical Device No.
Logical Device
Logical Device
Logical Device
Logical Device
#1
#1
Configuration
Configuration
#2
#2
Control
Control
#C
#C
W83627EHF/EF, W83627EHG/EG
Parallel Port
FUNCTION
UART A
-29-
FDC
Logical Device
Logical Device
One Per
One Per
Publication Release Date: April 7, 2009
I/O BASE ADDRESS
100h ~ FF8h
100h ~ FF8h
100h ~ FF8h
Version 1.94