W83791G Datasheet, PDF (9/99 Pages) Winbond – Winbond H/W Monitoring IC

W83791D/G
2. FEATURES
2.1 Monitoring Items
• 10 voltage inputs
--- Typical for VCORE, +3.3V, +12V, -12V, +5V, -5V, +5VSB, VBAT, and two reserved
• 5 fan speed monitoring inputs
• 3 temperature inputs from remote thermistors, 2N3904 NPN-type transistors or Pentium^TM II
(Deschutes) thermal diode output
• Case open detection input
• WATCHDOG comparison of all monitored values
• Programmable hysteresis and setting points (alarm thresholds) for all monitored items
2.2 Address Resolution Protocol (ARP) and Alert-Standard Forum (ASF)
• Support System Management Bus (SMBus) version 2.0 specification
• Comply with hardware sensor slave ARP (Address Resolution Protocol)
• Response sensor type ARP command
• Response ASF command --- Get Event Data , Get Event Status
• Comply with ASF sensors (Monitoring fan speed, voltage, temperature, and case open)
2.3 Speech Items
• Programmable speech synthesizer with new high fidelity synthesis algorithm
• Build in 8-bit current D/A converter
• 1 CPU present or absent trigger input
• 5 External trigger inputs
• 128 Internal programmable trigger inputs
• 17 H/W Monitor event trigger inputs
• Programmable 0-255 seconds timeout trigger inputs for firmware or software
• Instruction cycle is <= 400 uS typically
• Section control provided in each voice section
• External resistor for ring oscillator
2.4 Actions Enabling
• Beep tone warning separated speech output
• 5 PWM (pulse width modulation) outputs for fan speed control (1~3 support Smart Fan control) and
5 Fan speed inputs for monitoring --- Total up to 5 sets of fan speed monitoring and controlling
• Issue SMI#, OVT#, IRQ signals to activate system protection
• Warning signal pop-up in application software
Publication Release Date: April 14, 2006
-3-
Revision 1.1