Product Summary

The W83791G is an evolving version of the W83782G. Besides the conventional functions of W83782G, W83791G uniquely provides several innovative features such as speech function, ASF sensor compliant, SMBus 2.0 ARP command compatible, VID table selection trapping, and 5VID output control. An 8-bit analog-to-digital converter (ADC) was built inside W83791G. W83791G can simultaneously monitor 10 analog voltage inputs (including power VDD/5VSB monitoring), 5 fan tachometer inputs, 3 remote temperatures, and one case open detection signal.

Parametrics

W83791G absolute maximum ratings: (1)Power Supply Voltage: -0.5 to 7.0V ; (2)Input Voltage: -0.5 to VDD+0.5V ; (3)Operating Temperature: 0 to +70℃; (4)Storage Temperature: -55 to +150℃.

Features

W83791G features: (1)Support System Management Bus (SMBus) version 2.0 specification; (2)Comply with hardware sensor slave ARP (Address Resolution Protocol); (3)Response sensor type ARP command; (4)Response ASF command --- Get Event Data , Get Event Status; (5)Build in 8-bit current D/A converter; (6)1 CPU present or absent trigger input; (7)5 External trigger inputs; (8)128 Internal programmable trigger inputs; (9)17 H/W Monitor event trigger inputs; (10)Programmable 0-255 seconds timeout trigger inputs for firmware or software; (11)Instruction cycle is <= 400 uS typically; (12)Section control provided in each voice section; (13)External resistor for ring oscillator 2.4 Actions Enabling; (14)Beep tone warning separated speech output; (15)Issue SMI#, OVT#, IRQ signals to activate system protection; (16)CPU Voltage ID reading; (17)VID output control; (18)Enhance beep warning by detecting Intel VRM 9.0 VID 2.6 General ; (19)I2CTM serial bus interface; (20)5 VID input pins for CPU VCORE identification (for PentiumTM II/III); (21)Initial power fault beep (for +3.3V, VCORE); (22)Internal clock Oscillator with 3M Hz; (23)5V VSB operation; (24)48-pin LQFP.

Diagrams

W83791G PIN CONFIGURATION

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
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W83791G
W83791G


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Data Sheet

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