EVAL-ADM1030 Datasheet, PDF (6/14 Pages) Analog Devices – Evaluation Board for ACPI Temperature Monitor and PWM Fan Controller

EVAL-ADM1030/31
Preliminary Technical Data
CONNECTORS AND SWITCHES AND INDICATORS
The function of the various connectors, switches and
indicators on the evaluation board are explained below.
ADDRESS SELECT SWITCH (S5)
The ADM1030/31 has an SMBus Address pin (ADD).
This is a tri-state logic input which sets the lower 2 bits of
the SMBus address.
CENTRONICS CONNECTOR (J3)
The evaluation board may be connected to the personal
computer via the parallel printer port using the centronics
cable provided.
TABLE1. ADD PIN TRUTH TABLE
ADD Pin
A1
A0
Gnd
0
0
No Connect
1
0
SW5
Lo
Center
POWER CONNECTORS (J4 & J6)
Vcc
0
1
Hi
Power is supplied to the board via J6 using a 15V Power
Supply mains adaptor. This adaptor is not included in the
THERM LED (D1)
evaluation kit. Alternatively power may be supplied to the This LED illuminates whenever a measured temperature
board via J4 thus allowing a desktop power supply to be
used.
RY _{TEST CONNECTOR (J7)}
A _{J7 is provided as a test connector on the ADM1030/31}
IN ^{evaluation board. The remote thermal diode pins, SMBus}
L _{and Power pins are all connected to here. This allows the}
IM ^{A user easy access to ADM1030/31 signals.}
EL ^{IC An off board thermal sensor may be connected as the}
external sensor via the remote thermal diode pins of the
R ^{N test connector.}
P _{CH A FAN CONNECTORS (J1 AND J2)}
TE ^{AT The fans which are to be controlled by the ADM1030/31}
D ^{are connected to the board using these connectors.}
exceeds a pre-programmed THERM Limit.
FAN_FAULT LED (D2)
This LED will illuminate whenever a fan fault is detected.
If there is a second fan connected then this should spin up
to full speed.
POWER LED (D3)
This LED illuminates whenever power is supplied to the
board.
INT LED (D4)
This LED illuminates whenever the ADM1030/31 issues
an interrupt signal (eg. when an out of limit measurement
is made). For more information on the various conditions
which cause INT to be pulled low please see the datasheet.
SMBUS CONNECTOR (J8)
This connector allows the user easy access to the SMBus
signals and may be used if the user wishes to communicate
with the ADM1030/31 in a different way other than using
the Centronics connector.
TACH\AIN SWITCH (S1 AND S2)
This essentially allows the user to switch between a fan
with a Tach Signal and one without. In this case switching
off the Tach signal will automatically switch in the Rsense
circuit which is used to determine the fan speed without
the Tach signal. Details of this method of fan speed
measurement are provided on the datasheet.
REMOTE DIODE SWITCH (S3 AND S4)
This switch allows the user to choose between the on-
board remote temperature sensors (Q3 and Q4) and ones
that can be connected to the test connector J7. When the
switch is in the on position the on-board sensors are
selected. When it is in the off position the off-board sensor
is selected.
–6–
REV. PrA