W83791D Information Storage Devices, Inc, W83791D Datasheet - Page 10

• Manufacturer Part Number: W83791D
• Description: Hardware Monitor With Speech Synthesizer And Asf Functions
• Manufacturer: Information Storage Devices, Inc

2.
2.1 Monitoring Items
2.2 Address Resolution Protocol (ARP) and Alert-Standard Forum(ASF)
2.3 Speech Items
2.4 Actions Enabling
10 voltage inputs
5 fan speed monitoring inputs
3 temperature inputs from remote thermistors, 2N3904 NPN-type transistors or Pentium
thermal diode output
Case open detection input
WATCHDOG comparison of all monitored values
Programmable hysteresis and setting points (alarm thresholds) for all monitored 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 ¡ Ø 400 £ g S typically
Section control provided in each voice section
External resistor for ring oscillator
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
--- Typical for VCORE, +3.3V, +12V, -12V, +5V, -5V, +5VSB, VBAT, and two reserved
FEATURES
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)
3
Publication Release Date: Aug, 2001
TM
W83791D
Preliminary
Revision 0.41
II
(Deschutes)