W83783S_07 WINBOND [Winbond], W83783S_07 Datasheet - Page 3

• Manufacturer Part Number: W83783S_07
• Description: Winbond H/W Monitoring IC
• Manufacturer: WINBOND [Winbond]

Table of Contents-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 1
FEATURES ................................................................................................................................. 2
2.1
2.2
2.3
2.4
KEY SPECIFICATIONS .............................................................................................................. 3
PIN CONFIGURATION ............................................................................................................... 3
PIN DESCRIPTION..................................................................................................................... 4
FUNCTIONAL DESCRIPTION ................................................................................................... 6
6.1
6.2
6.3
6.4
6.5
6.6
REGISTERS AND RAM............................................................................................................ 21
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
Monitoring Items ............................................................................................................. 2
Actions Enabling ............................................................................................................. 2
General ........................................................................................................................... 2
Package .......................................................................................................................... 2
General Description ........................................................................................................ 6
Access Interface ............................................................................................................. 6
6.2.1
6.2.2
Analog Inputs ................................................................................................................ 10
6.3.1
6.3.2
6.3.3
6.3.4
FAN Speed Count and FAN Speed Control ................................................................. 14
6.4.1
6.4.2
Temperature Measurement Machine ........................................................................... 16
6.5.1
6.5.2
6.5.3
Voltage and Fan SMI# mode ........................................................................................ 20
6.6.1
6.6.2
Configuration Register ⎯ Index 40h ............................................................................ 21
Interrupt Status Register 1 ⎯ Index 41h ...................................................................... 23
Interrupt Status Register 2 ⎯ Index 42h ...................................................................... 23
SMI# Mask Register 1 ⎯ Index 43h............................................................................. 24
SMI# Mask Register 2 ⎯ Index 44h............................................................................. 25
Reserved Register ⎯ Index 45h-- 46h ......................................................................... 25
VID/Fan Divisor Register ⎯ Index 47h......................................................................... 26
Serial Bus Address Register ⎯ Index 48h ................................................................... 26
Value RAM ⎯ Index 20h- 3Fh or 60h - 7Fh ................................................................. 27
The first serial bus access timing is shown as follow: ....................................................... 6
The serial bus timing of the temperature 2 and 3 is shown as follow:............................... 7
Monitor over 4.096V voltage:.......................................................................................... 11
Monitor negative voltage:................................................................................................ 12
Monitor temperature from thermistor: ............................................................................. 13
Monitor temperature from Pentium II
Fan speed count............................................................................................................. 14
Fan speed control........................................................................................................... 15
W83783S temperature sensor 2 SMI# interrupt has two modes: ................................... 17
W83783S temperature sensor 1 SMI# interrupt has three modes.................................. 18
W83783S temperature sensor 1 Over-Temperature (OVT#) has three modes .............. 19
Voltage SMI# mode ........................................................................................................ 20
Fan SMI# mode .............................................................................................................. 20
- iii -
TM
thermal diode or bipolar transistor 2N3904 ....... 13
Publication Release Date: August 21, 2007
W83783S
Revision 1.0