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ADT7466ARQZ-REEL7 数据表(PDF) 7 Page - Analog Devices

部件名 ADT7466ARQZ-REEL7
功能描述  dBCool Remote Thermal Controller and Voltage Monitor
Download  48 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADT7466ARQZ-REEL7 数据表(HTML) 7 Page - Analog Devices

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ADT7466
Rev. 0 | Page 7 of 48
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADT7466
TOP VIEW
(Not to Scale)
DRIVE1
1
SCL
16
TACH1
2
SDA
15
DRIVE2
3
ALERT
14
TACH2
4
REFOUT
13
GND
5
AIN2/TH2/D2+
12
VCC 6
AIN1/TH1/D2–
11
FAN1_ON/PROCHOT/THERM
7
D1+
10
FANLOCK
8
D1–
9
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Type
Description
1
DRIVE1
Analog
Output
Output of 8-Bit DAC Controlling Fan 1 Speed.
2
TACH1
Digital
Input
Fan Tachometer Input to Measure Speed of Fan 1.
3
DRIVE2
Analog
Output
Output of 8-Bit DAC Controlling Fan 2 Speed.
4
TACH2
Digital
Input
Fan Tachometer Input to Measure Speed of Fan 2.
5
GND
Ground
Ground Pin for Analog and Digital Circuitry.
6
VCC
Power
supply
3.3 V Power Supply. VCC is also monitored through this pin.
7
FAN1_ON/ PROCHOT/
THERM
Digital I/O
If configured as FAN1_ON, this pin is the open-drain control signal output for the dc-dc
converter. Active (high) when DRIVE1 > V_FAN_MIN.
If configured as PROCHOT, the input can be connected to the PROCHOT output of the
Intel Pentium 4 processor to time and monitor PROCHOT assertions.
If configured as THERM, this pin is the interrupt output to flag critical thermal events.
8
FANLOCK
Digital
Output
Open-Drain Digital Output. This output is asserted (low) when either of the fans stall or
fail to spin up.
9
D1−
Analog
Input
Cathode Connection to Thermal Diode 1.
10
D1+
Analog
Input
Anode Connection to Thermal Diode 1.
11
AIN1/TH1/D2−
Analog
input
0 V to 2.25 V Analog Input. Can be reconfigured as thermistor input or as a cathode
connection to Thermal Diode 2. Configured for thermistor connection by default.
12
AIN2(TH2)/D2+
Analog
Input
0 V to 2.25 V Analog Input. Can be reconfigured as thermistor input or as an anode
connection to Thermal Diode 2. Configured for thermistor connection by default.
13
REFOUT
Analog
Output
2.25 V Reference Voltage Output, 20 mA maximum output current.
14
ALERT
Digital
Output
Open-Drain Digital Output. The SMBus ALERT pin alerts the system to out-of-limit events
such as a failed fan, overtemperature, or out-of-limit analog measurement.
15
SDA
Digital I/O
Open-Drain Digital I/O. SMBus bidirectional serial data. Requires SMBus pull-up resistor.
16
SCL
Digital
Input
Open-Drain Digital Input. SMBus serial clock input. Requires SMBus pull-up resistor.


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