W83782D Datasheet, PDF (8/73 Pages) Winbond – MONITORING IC

Preliminary W83782D
2. FEATURES
2.1 Monitoring Items
• 3 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or Pentium^TM II
(Deschutes) thermal diode output
• 9 voltage inputs
--- typical for Vcore, +3.3V, +12V, -12V, +5V, -5V, +5V Vsb, Vbat, and one reserved
• 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
• 4 PWM (pulse width modulation) outputs for fan speed control (3 are MUX optional)
--- Total up to 3 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
• ISA and I²C^TM serial bus interface
• 5 VID input pins for CUP Vcore identification (for Pentium^TM II)
• Initial power fault beep (for +3.3V, Vcore)
• Master reset input to W83782D
• Independent power plane of digital Vcc and analog Vcc (inputs to IC)
• 3 pins (IA0, IA1, IA2) to provide selectable address setting for application of multiple devices (up
to 8 devices) wired through I²C^TM interface
• Intel^TM LDCM (DMI driver 2.0) support
• Acer^TM ADM (DMI driver 2.0) support
• Winbond hardware monitoring application software (Hardware Doctor^TM ) 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
• 48-pin LQFP
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