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W83783G

Winbond H/W Monitoring IC

Winbond 

W83783S

2. FEATURES

2.1 Monitoring Items

• 3 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or PentiumTM II

(Deschutes) thermal diode output

• 6 voltage inputs

• --- typical for Vcore, +3.3V, +12V, -12V, +5V, -5V

• 3 fan speed monitoring inputs

• Case open detection input

• WATCHDOG comparison of all monitored values

• Programmable hysteresis and setting points (alarm thresholds) for all monitored items

2.2 Actions Enabling

• Beep tone warning

• 2 PWM (pulse width modulation) outputs for fan speed control (MUX optional)

--- Total up to 2 sets of fan speed monitoring and controlling

• Issue SMI#, OVT#, GPO# signals to activate system protection

• Warning signal pop-up in application software

2.3 General

• I2CTM serial bus interface

• 5 VID input pins for CUP Vcore identification (for PentiumTM II)

• Initial power fault beep (for +3.3V, Vcore)

• IntelTM LDCM (DMI driver 2.0) support

• AcerTM ADM (DMI driver 2.0) support

• Winbond hardware monitoring application software (Hardware DoctorTM ) support, for both

Windows 95/98 and Windows NT 4.0/5.0

• Input clock rate optional for 24, 48, 14.318 Mhz

• 5V Vcc operation

2.4 Package

• 24-pin SOP

Publication Release Date: Oct. 2004

-4-

Revision 1.1

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