EVAL-ADM1022 AD [Analog Devices], EVAL-ADM1022 Datasheet

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EVAL-ADM1022

Manufacturer Part Number
EVAL-ADM1022
Description
Evaluation Board for Microprocessor System Temperature Monitor
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
External Temperature Measurement with Remote Diode
(Two Channels)
On-Chip Temperature Sensor
Interrupt and Overtemperature Outputs
Fault Tolerant Fan Control
Brownout Detection
LDCM Support
I
Standby 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
INTRODUCTION
The ADM1022 Evaluation Board allows the ADM1022
microprocessor system hardware monitor IC to be easily
evaluated using a personal computer. Using both the
evaluation board and its accompanying software, the
ADM1022 can be interfaced to any personal computer
running Windows
computer’s parallel printer port, or via the computer’s
SMBus using the DIMM interface card provided.
The evaluation board allows all the input and output func-
tions of the ADM1022 to be exercised without the need
for external components. The software allows control and
monitoring of the ADM1022’s internal registers.
THE ADM1022
The following gives a brief description of the ADM1022.
More detailed device information can be found in the
datasheet for the device. The ADM1022 is a hardware
temperature monitor for personal computers and other
microprocessor systems which features a three-channel
digital thermometer and over-temperature alarm. It can
also control the speed of a cooling fan.
The device can measure local temperature using an on-
chip diode connected transistor, or can use low cost, small
signal transistors such as the 2N3904 or 2N3906 to mea-
sure the temperatures of 2 external microprocessors. The
measurement technique implemented, cancels the absolute
value of the transistor’s base emitter voltage, so that no
calibration is required.
REV. B
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.
2
C Compatible System Management Bus (SMBus)
TM
95 or Windows
TM
98, via the
Evaluation Board for Microprocessor
EVALUATION SYSTEM PACKAGE CONTENTS
The evaluation system package contains the following
items:
* This application note
* ADM1022 evaluation board
* DIMM interface card
* Centronics cable
* DIMM interface ribbon cable
* Evaluation software on floppy disks
EVALUATION BOARD HARDWARE
The ADM1022 evaluation board contains the following
main components, which can be identified from the block
diagram, printed circuit board silk screen and schematic
diagram of figures 1, 2 and 3 overleaf.
* ADM1022 I.C.
* NPN and PNP sensor transistors
* LED indicators for power, resets, interrupt, over-tem-
perature, fan off request, and fan full-on
* Switches for selecting voltage monitoring source, tem-
perature sensors, and for setting device’s SMBus address
* Interface buffers
* Connectors for parallel and SMBus interface
* Test connector
* 3.3V supply regulation circuit
REQUIREMENTS
* PC running Windows 95 or Windows 98
* 15Vdc 300mA regulated power supply
One Technology Way, P .O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
System Temperature Monitor
World Wide Web Site: http://www.analog.com
EVAL-ADM1022
Analog Devices, Inc., 1998

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EVAL-ADM1022 Summary of contents

Page 1

... Test connector * 3.3V supply regulation circuit REQUIREMENTS * PC running Windows 95 or Windows 98 * 15Vdc 300mA regulated power supply One Technology Way, P .O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 Fax: 781/326-8703 System Temperature Monitor EVAL-ADM1022 World Wide Web Site: http://www.analog.com Analog Devices, Inc., 1998 ...

Page 2

... EVAL-ADM1022 FAN_OFF SW2 ADD FAN_OFF MR PNP INT SENSOR ADM1022 SDATA D2+ NPN SENSOR D2- D1+ SCLK D2+ D1- EXTERNAL FAN_SPD D2- SENSOR V DD D1+ RST1 RST2 D1- SCLK D2 SDA AUX_RST RESET GND V MON TEST CONNECTOR RED INTERRUPT BUFFERS V DD FAN D1 D4 GREEN ...

Page 3

ADM1022.sch-1 - Tue Dec 08 11:59:10 1998 ...

Page 4

... EVAL-ADM1022 CONNECTORS, SWITCHES AND INDICATORS The function of the various connectors, switches and indi- cators on the evaluation board is explained below. TEST CONNECTOR J4 Test connector J4 allows the serial data and clock lines of the ADM1022 and the line to be monitored. The connector also allows access to the V lines ...

Page 5

... Parallel printer port the PC’s SMBus using the DIMM interface card. To start the software, select Start- Programs- ADM1022 Evaluation Software. When the program is started, the Software Initialisation Wizard screen will appear. after PB2 is re –5– EVAL-ADM1022 ...

Page 6

... EVAL-ADM1022 Click on “Next” the next screen, which allows the user to select between connection of the evaluation board via the printer port or to the SMBus using the DIMM interface card. Once the communications medium has been selected, click on “Next” the next screen. When you are ...

Page 7

... About dialog box showing more information on the soft- ware. On-line help may be accessed at any time during the software’s use by pressing F1 on the keyboard also possible to quit the program by clicking on the close button –7– EVAL-ADM1022 ...

Page 8

... EVAL-ADM1022 READ/WRITE This tab displays information about the ADM1022’s inter- nal registers. It allows their contents to be read and/or altered. Each register has a label associated with it printed on the tab. Moving the mouse pointer over the label changes the register label colour to light green. When the register label is clicked, it becomes a highlighted yellow ...

Page 9

... Internal Temperature and the Remote Diode temperature. If the ADM1022 has been configured for both remote thermal diode channels, then pressing the “Easy Setup” button will graph the Internal Temperature and the two Remote Diode temperature channels. Figure 4. Read/Write Program Tab –9– EVAL-ADM1022 ...

Page 10

... EVAL-ADM1022 BARGRAPH On the left-most position of the Visual Display tab is the bargraph control/indicator. This 3D-type indicator gives a visual indication of the selected temperature channel. The bargraph also has 2 moveable controls; these control the upper and lower interrupt limits which may be set for each temperature channel ...

Page 11

... While the display is graphing, the user can click on the Read/Write tab, and make any adjustments, without having to stop the graphing. This feature can be useful for en- abling or disabling interrupts, or other functions, whilst still measuring temperature. Figure 5. Visual Display tab –11– EVAL-ADM1022 ...

Page 12

... EVAL-ADM1022 Figure 6. Normal Graph Fig 7. Zoomed In Graph –12– REV. B ...

Page 13

... ADM1022 would be 1101, etc. For instance, if the stepping were A0 and this part is a ADM1022, then this register would read 1100 0000. This register is read only. Power on value = 0010 0101 Power on value = 0000 0000 Power on value = 0000 0000 Power on value = 0000 0000 –13– EVAL-ADM1022 ...

Page 14

... EVAL-ADM1022 APPENDIX B. COMPONENT LIST Capacitors C1,C2,C3 10µF tantalum C4,C5,C6 0.1µF Resistors R1 47k R2,R4,R5,R15 10k R3,R6,R7,R9,R14,R16 680R R8 80R R10,R11,R12,R13 2k2 Semiconductors Q1,Q3 2N3904 Q 2 2N3906 D1,D2,D4 Green LED D3,D6,D7 Red LED D 5 1N4001 U 1 ADM1022 U 2 AD820 U 4 74HC05 U 6 78L033 Connectors J 1 Power socket J 2 36-way Centronics J 3 10-way R ...

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