W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 9

• Manufacturer Part Number: W83791G
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83791G

• Function: Hardware Monitor
• Topology: ADC
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.
2.1
• 10 voltage inputs
• 5 fan speed monitoring inputs
• 3 temperature inputs from remote thermistors,
• Case open detection input
• WATCHDOG comparison of all monitored values
• Programmable hysteresis and setting points (alarm thresholds) for all monitored items
2.2
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2.3
• 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
• Beep tone warning separated speech output
• 5 PWM (pulse width modulation) outputs for fan speed control (1~3 support Smart Fan control) and
• Issue SMI#, OVT#, IRQ signals to activate system protection
• Warning signal pop-up in application software
(Deschutes) thermal diode output
5 Fan speed inputs for monitoring --- Total up to 5 sets of fan speed monitoring and controlling
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)
--- Typical for VCORE, +3.3V, +12V, -12V, +5V, -5V, +5VSB, VBAT, and two reserved
FEATURES
Monitoring Items
Address Resolution Protocol (ARP) and Alert-Standard Forum (ASF)
Speech Items
Actions Enabling
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2N3904 NPN-type transistors or Pentium
Publication Release Date: April 14, 2006
W83791D/G
Revision 1.1
TM
II