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ADT7466ARQZ-REEL7 数据表(PDF) 7 Page - Analog Devices |
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ADT7466ARQZ-REEL7 数据表(HTML) 7 Page - Analog Devices |
7 / 48 page 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. |
类似零件编号 - ADT7466ARQZ-REEL7 |
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类似说明 - ADT7466ARQZ-REEL7 |
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