W83627DHG Nuvoton Technology Corporation of America, W83627DHG Datasheet - Page 40

• Manufacturer Part Number: W83627DHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG

• 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

7.
7.1
The W83627DHG monitors several critical parameters in PC hardware, including power supply
voltages, fan speeds, and temperatures, all of which are very important for a high-end computer system
to work stably and properly.
The W83627DHG can simultaneously monitor all of the following inputs:
These inputs are converted to digital values using a built-in, eight-bit analog-to-digital converter (ADC).
In response to these inputs, the W83627DHG can generate the following outputs:
The W83627DHG provides hardware access to all monitored parameters through the LPC or I
interface and software access through application software, such as Winbond’s Hardware Doctor
BIOS. In addition, the W83627DHG can generate pop-up warnings or beep tones when a parameter
goes outside of a user-specified range.
The rest of this section introduces the various features of the W83627DHG hardware-monitor capability.
These features are divided into the following sections:
7.2
The W83627DHG provides two interfaces, LPC and I
internal registers of the hardware monitor.
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HARDWARE MONITOR
General Description
Access Interfaces
Nine analog voltage inputs (four intrinsic monitor VBAT, 3VSB, 3VCC and AVCC power; five
externally monitored power)
Five fan tachometer inputs
Three remote temperatures, by thermistor or from the CPU thermal-diode output(voltage or
Current Mode)
One case-open detection signal.
Four PWM (pulse width modulation) or DC fan outputs for the fan speed control
Beep tone output for warnings
SMI#
OVT# signals for system protection events
Access Interfaces
Analog Inputs
Fan Speed Measurement and Control
Smart Fan Control
SMI# interrupt mode
OVT# interrupt mode
Registers and Value RAM
-28-
2
C, for the microprocessor to read or write the
Publication Release Date: Aug, 22, 2007
W83627DHG
Version 1.4
TM
, or
2
C