W83791D Information Storage Devices, Inc, W83791D Datasheet - Page 3

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

TABLE OF CONTENTS
1.
2.
3.
4.
5.
6.
2.1
2.2
2.3
2.4
2.5
2.6
2.7
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.2.1
6.3.1
6.3.2
6.3.3
6.3.4
6.5.1
6.6.1
6.6.2
6.7.1
6.7.2
6.7.3
6.8.1
6.8.2
6.8.3
6.8.4
6.8.5
GENERAL DESCRIPTION .................................................................................................... 1
FEATURES ........................................................................................................................... 3
Monitoring Items.................................................................................................................................3
Address Resolution Protocol (ARP) and Alert-Standard Forum(ASF)...................................................3
Speech Items .......................................................................................................................................3
Actions Enabling .................................................................................................................................3
Enhance Monitoring VID function .......................................................................................................4
General................................................................................................................................................4
Package...............................................................................................................................................4
KEY SPECIFICATIONS......................................................................................................... 4
PIN CONFIGURATION .......................................................................................................... 5
PIN DESCRIPTION................................................................................................................ 6
FUNCTION DESCRIPTION.................................................................................................. 10
General Description...........................................................................................................................10
Access Interface ................................................................................................................................10
Speech Function ................................................................................................................................11
Address Resolution Protocol (ARP) Introduction ...............................................................................14
ASF(Alert Standard Format) Introduction ..........................................................................................16
Analog Inputs ....................................................................................................................................19
FAN Speed Count and FAN Speed Control........................................................................................21
Temperature Measurement Machine ..................................................................................................25
The first serial bus access timing ............................................................................ 10
General Description ................................................................................................. 11
Event Trigger Queue ............................................................................................... 11
Connection of EEPROM .......................................................................................... 12
Speaker Output ....................................................................................................... 13
Platform Event Trap (PET)....................................................................................... 16
Monitor over 4.096V voltage: ................................................................................... 19
Monitor negative voltage:......................................................................................... 20
Fan speed count...................................................................................................... 21
Fan speed control.................................................................................................... 22
Smart Fan Control ................................................................................................... 23
Monitor temperature from thermistor: ....................................................................... 25
Monitor temperature from Pentium II
SMI# interrupt for W83791D Voltage........................................................................ 26
SMI# interrupt for W83791D Fan ............................................................................. 26
SMI#
interrupt
for
W83791D temperature sensor 1/2/3 ........................................................................
ii
TM
thermal diode or bipolar transistor 2N3904... 25
Publication Release Date: Aug, 2001
W83791D
Preliminary
Revision 0.41