=
PRELIMINAR
Y
TECHNICAL
DA
TA
Versatile PC
Systems Monitor ASIC
ADM1026
FEATURES
Up to 19 Analog Measurement Channels (Including Inter-
nal Measurements)
Up to 8 Fan Speed Measurement Channels
Up to 13 General-Purpose Logic I/O Pins
Remote Temperature Measurement with Remote Diode
(Two Channels)
On-Chip Temperature Sensor
Analog and PWM Fan Speed Control Outputs
I
2
C Compatible System Management Bus (SMBus)
8kbytes on-chip E
2
PROM
FUNCTIONAL BLOCK DIAGRAM
REV. PrL 06/00
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
Preliminary Technical Data
I
2
C is a registered trademark of Philips Corporation
Chassis Intrusion Detect
Interrupt Output
Reset Input, Reset Outputs
Thermal Interrupt (THERM) Output
Shutdown Mode to Minimize Power Consumption
Limit Comparison of all Monitored Values
APPLICATIONS
Network Servers and Personal Computers
Microprocessor-Based Office Equipment
Test Equipment and Measuring Instruments
3.3V S T BY
R E S E T
G E N E RA TO R
3.3V M AIN
RE S E T
G E N E RA TO R
IN P UT
AT T E N U AT O RS
A N D
AN A L O G
M U L T IP L E X E R
+V
B A T
(0 - + 4.0V )
+5V
IN
(0 - +6.66V )
-12V
IN
(0 - -1 6V )
+12V
IN
(0 - + 1 6V )
+V
C C P IN
(0 - +3V )
A
IN 0
(0 - +3 V )
A
IN 1
(0 - +3 V )
A
IN 2
(0 - +3 V )
A
IN 3
(0 - +3 V )
A
IN 4
(0 - +3 V )
A
IN 5
(0 - +3 V )
A
IN 6
(0 - +2.5 V )
A
IN 7
(0 - +2.5 V )
D2+/A
IN 8
(0 - + 2.5V )
D2-/A
IN 9
(0 - + 2.5V )
D1+
D1-/NT E S TIN
BA ND G AP
T E M P . S E NSO R
DG N D
DA C
R ESETST B Y
BA ND G AP
RE F E RE N CE
AG N D
V
R E F
(1.8 2V O R 2.5 V )
P W M RE G IS T E R
AN D C O N T RO LL E R
V A L U E A ND
L IM IT
RE G I S T E R S
L IM IT
CO M P A R A T O R S
S E RI AL B US
IN T E R F A C E
S C L
S D A
3.3V M AIN
G P IO
RE G IS T E R S
AD D/
NT E S T O U T
AD D R E S S
P O I NT E R
RE G IS T E R
F AN 7/G P IO 7
F AN 6/G P IO 6
F AN 5G P IO 5
F AN 4/G P IO 4
F AN 3/G P IO 3
F AN 2/G P IO 2
F AN 1/G P IO 1
F AN 0/G P IO 0
G P IO 15
G P IO 14
G P IO 13
G P IO 12
G P IO 11
G P IO 10
G P IO 9
G P IO 8
P W M
3.3V S T BY
IN T M A S K
RE G I S T E R S
G P IO 16/
TH ER M
CO N F IG U R AT IO N
RE G IS T E R S
IN T E RR U P T
S T AT U S
RE G I S T E R S
CI
A D M 1 026
T E M P E RA T UR E
CO N F IG U R AT I O N
RE G IS T E R
IN T E RR U P T
M A S KI N G
F AN S P E E D
CO UN T E R
8-B IT A DC
8KBY T E S
E 2P R O M
AN A L O G
O U T P U T R E G I S T E R
AN D 8 -B IT DA C
R ESETM A IN
IN T
100k
⍀
⍀
⍀
⍀
T O G P IO
RE G IS T E R S
R ESET IN
V
C C
100k
⍀
⍀
⍀
⍀
V
C C
V
C C
100k
⍀
⍀
⍀
⍀
V
C C
100k
⍀
⍀
⍀
⍀
