General Description
   The G7921 contains 3 precise digital thermometers, one fan controllers, hardware and software thermal shutdown, and a system-reset circuit.

FEATUREs
◾ Measures Three Remote Temperatures
◾ Adjustable Offset for Each Sensor via SMBus
◾ Accuracy: ±1°C (+ 60°C to + 100°C)
                    ±3°C (- 10°C to + 120°C)
◾ +4.5V to +5.5V Supply Range
◾ Programmable Hardware Thermal Shutdown
   for Sensor 2 and Programmable Software
   Thermal Shutdown for Sensor 1, 3.
◾ SMBus 2-Wire Serial Interface With Writting
   Protection Function.
◾ Alert Signal for Diode Fault, Fan Fail, and Fan
   Out of Control
◾ Supports SMBus Alert Response
◾ Fan Drivers Using Linear Control Algorithm
   with Built-in MOSFET
◾ Closed Loop Speed Control and programmable
   8 Bits Open Loop Voltage Control for Fan1
◾ Wide speed control range for Fan1, Accuracy
   within 2%, when SET_CNT1 > 50
◾ Internal Current- limit and Over-temperature
   Protection for the Fan
◾ Reset Function Precision Monitoring of 5V
   Power-Supply Voltage
◾ Measure Thermal Diode with Transistor Model
◾ Support 45nm, 65nm and 90nm CPU thermal
   diode
◾ 20-Pin SSOP Package

APPLICATIONs
◾ Desktop and Notebook
◾ Central Office Computers
◾ Telecom Equipment
◾ Smart Battery Packs
◾ Industrial Controls
◾ LAN Servers