W83782D
Winbond H/W
Monitoring IC
W83782D Data Sheet Revision History
Pages
Dates
Version
Version
on Web
Main Contents
1
n.a.
n.a.
All the version before 0.50 are for internal use.
2
n.a.
98/7
0.5
n.a.
First publication.
3
P.40
99/4
0.55
A1
Add the content of Diode Selection Register Index
59h(Bank0)
4
P.42
99/4
0.55
A1
Add the content of VBAT Monitor Control Register
Index 5Dh (Bank0)
5
6
7
8
9
10
Please note that all data and specifications are subject to change without notice. All
the trade marks of products and companies mentioned in this data sheet belong to
their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or
systems where malfunction of these products can reasonably be expected to result
in personal injury. Winbond customers using or selling these products for use in
such applications do so at their own risk and agree to fully indemnify Winbond for
any damages resulting from such improper use or sales.
Preliminary W83782D
Publication Release Date: April 1999
- I -
Version A1
TABLE OF CONTENTS
1. GENERAL DESCRIPTION ............................................................................................1
2. FEATURES.......................................................................................................................2
2.1 MONITORING ITEMS .........................................................................................................................2
2.2 ACTIONS ENABLING .........................................................................................................................2
2.3 GENERAL ............................................................................................................................................2
2.4 PACKAGE ............................................................................................................................................2
3. KEY SPECIFICATIONS .................................................................................................3
4. PIN CONFIGURATION ..................................................................................................3
5. PIN DESCRIPTION.........................................................................................................4
6. FUNCTIONAL DESCRIPTION......................................................................................7
6.1 GENERAL DESCRIPTION...................................................................................................................7
6.2 ACCESS INTERFACE..........................................................................................................................7
6.2.1 ISA interface .................................................................................................................................7
6.2.2 I2C interface..................................................................................................................................9
6.2.3 The first serial bus access timing are shown as follow:...................................................................9
6.2.4 The serial bus timing of the temperature 2 and 3 is shown as follow: ...........................................11
6.3 ANALOG INPUTS ..............................................................................................................................14
6.3.1 Monitor over 4.096V voltage: ......................................................................................................15
6.3.2 Monitor negative voltage: ............................................................................................................15
6.3.3 Monitor temperature from thermistor:..........................................................................................16
6.3.4 Monitor temperature from Pentium IITM thermal diode or bipolar transistor 2N3904 .................16
6.4 FAN SPEED COUNT AND FAN SPEED CONTROL.........................................................................17
6.4.1 Fan speed count ...........................................................................................................................17
6.4.2 Fan speed control.........................................................................................................................19
Preliminary W83782D
- II -
6.5 TEMPERATURE MEASUREMENT MACHINE ................................................................................20
6.5.1 The W83782D temperature sensor 1 SMI# interrupt has two modes: ...........................................21
6.5.2 The W83782D temperature sensor 2 and sensor 3 SMI# interrupt has two modes and it is
programmed at CR[4Ch] bit 6. ....................................................................................................22
6.5.3 The W83782D temperature sensor 2 and 3 Over-Temperature (OVT) has two modes, and they are
programmed at Bank1 and Bank2 CR[52h] bit1 . These two bits needs to be programmed the same
value. ...........................................................................................................................................23
7. REGISTERS AND RAM ...............................................................................................24
7.1 ADDRESS REGISTER (PORT X5H) ..................................................................................................24
7.2 DATA REGISTER (PORT X6H) .........................................................................................................25
7.3 CONFIGURATION REGISTER INDEX 40H...................................................................................26
7.4 INTERRUPT STATUS REGISTER 1 INDEX 41H............................................................................26
7.5 INTERRUPT STATUS REGISTER 2 INDEX 42H...........................................................................27
7.6 SMI# MASK REGISTER 1 INDEX 43H..........................................................................................28
7.7 SMI# MASK REGISTER 2 INDEX 44H..........................................................................................28
7.8 RESERVED REGISTER INDEX 45H..............................................................................................29
7.9 CHASSIS CLEAR REGISTER -- INDEX 46H ....................................................................................29
7.10 VID/FAN DIVISOR REGISTER INDEX 47H................................................................................29
7.11 SERIAL BUS ADDRESS REGISTER INDEX 48H........................................................................30
7.12 VALUE RAM INDEX 20H- 3FH OR 60H - 7FH (AUTO-INCREMENT).......................................31
7.13 VOLTAGE ID (VID4) & DEVICE ID - 49H .....................................................................................33
7.14 TEMPERATURE 2 AND TEMPERATURE 3 SERIAL BUS ADDRESS REGISTER--INDEX 4AH.33
7.15 PIN CONTROL REGISTER - INDEX 4BH .......................................................................................34
7.16 IRQ#/OVT# PROPERTY SELECT - INDEX 4CH.............................................................................35
7.17 FAN IN/OUT AND BEEP/GPO# CONTROL REGISTER - INDEX 4DH..........................................36
7.18 REGISTER 50H ~ 5FH BANK SELECT - INDEX 4EH (NO AUTO INCREASE) ............................37
Preliminary W83782D
Publication Release Date: April 1999
- III -
Version A1
7.19 WINBOND VENDOR ID - INDEX 4FH (NO AUTO INCREASE)....................................................37
7.20 WINBOND TEST REGISTER -- INDEX 50H - 55H (BANK 0) .......................................................38
7.21 BEEP CONTROL REGISTER 1-- INDEX 56H (BANK 0) ................................................................38
7.22 BEEP CONTROL REGISTER 2-- INDEX 57H (BANK 0) ................................................................39
7.23 CHIP ID -- INDEX 58H (BANK 0)....................................................................................................40
7.24 DIODE SELECTION REGISTER -- INDEX 59H (BANK 0)............................................................40
7.25 PWMOUT2 CONTROL -- INDEX 5AH (BANK 0) .......................................................................40-A
7.26 PWMOUT1 CONTROL -- INDEX 5BH (BANK 0) ...........................................................................41
7.27 PWMOUT1/2 CLOCK SELECT -- INDEX 5CH (BANK 0) ..............................................................41
7.28 VBAT MONITOR CONTROL REGISTER -- INDEX 5DH (BANK 0)..............................................42
7.29 PWMOUT3 CONTROL -- INDEX 5EH (BANK 0) ...........................................................................43
7.30 PWMOUT4 CONTROL -- INDEX 5FH (BANK 0)............................................................................43
7.31 TEMPERATURE SENSOR 2 TEMPERATURE (HIGH BYTE) REGISTER - INDEX 50H (BANK1)44
7.32 TEMPERATURE SENSOR 2 TEMPERATURE (LOW BYTE) REGISTER - INDEX 51H (BANK1)44
7.33 TEMPERATURE SENSOR 2 CONFIGURATION REGISTER - INDEX 52H (BANK1)...................45
7.34 TEMPERATURE SENSOR 2 HYSTERESIS (HIGH BYTE) REGISTER - INDEX 53H (BANK 1) ..46
7.35 TEMPERATURE SENSOR 2 HYSTERESIS (LOW BYTE) REGISTER - INDEX 54H (BANK 1) ...46
7.36 TEMPERATURE SENSOR 2 OVER-TEMPERATURE (HIGH BYTE) REGISTER - INDEX 55H
(BANK 1) ............................................................................................................................................47
7.37 TEMPERATURE SENSOR 2 OVER-TEMPERATURE (LOW BYTE) REGISTER - INDEX 56H
(BANK 1) ............................................................................................................................................47
7.38 TEMPERATURE SENSOR 3 TEMPERATURE (HIGH BYTE) REGISTER - INDEX 50H (BANK2)48
7.39 TEMPERATURE SENSOR 3 TEMPERATURE (LOW BYTE) REGISTER - INDEX 51H (BANK2)48
7.40 TEMPERATURE SENSOR 3 CONFIGURATION REGISTER - INDEX 52H (BANK 2)..................48
7.41 TEMPERATURE SENSOR 3 HYSTERESIS (HIGH BYTE) REGISTER - INDEX 53H (BANK 2) ..49
7.42 TEMPERATURE SENSOR 3 HYSTERESIS (LOW BYTE) REGISTER - INDEX 54H (BANK 2) ...49
7.43 TEMPERATURE SENSOR 3 OVER-TEMPERATURE (HIGH BYTE) REGISTER - INDEX 55H
(BANK 2) ............................................................................................................................................50
7.44 TEMPERATURE SENSOR 3 OVER-TEMPERATURE (LOW BYTE) REGISTER - INDEX 56H
(BANK 2) ............................................................................................................................................50
7.45 INTERRUPT STATUS REGISTER 3 INDEX 50H (BANK4)..........................................................51
7.46 SMI# MASK REGISTER 3 INDEX 51H (BANK 4).......................................................................51
7.47 BEEP CONTROL REGISTER 3-- INDEX 53H (BANK 4) ................................................................52
7.48 RESERVED REGISTER - INDEX 54H--58H (BANK 4) ...................................................................52
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