ADM1034

更新时间： 2024-01-15 15:24:02

品牌	Logo	应用领域
亚德诺 - ADI		风扇监控控制器
页数	文件大小	规格书
40页	1527K
描述
Thermal Monitor and Fan Speed (RPM) Controller

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数据手册

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ADM1034 数据手册

ADM1034

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

DRIVE1

TACH1

DRIVE2

TACH2

GND

SCL

SDA

ADM1034

TOP VIEW

(Not to Scale)

ALERT

LOCATION

D2+

D2–

THERM

D1+

FAN_FAULT/REF

D1–

Figure 3. Pin Configuration

Table 3. Pin Function Descriptions

Pin No.

Mnemonic

DRIVE1

TACH1

DRIVE2

TACH2

GND

Description

DRIVE1 Pin Drives Fan 1. Open-drain output. Requires a pull-up resistor.

Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.

DRIVE2 Pin Drives Fan 2. Open-drain output. Requires a pull-up resistor.

Fan 2 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.

Ground for Analog and Digital Circuitry.

Power. Can be powered by 3.3 V standby power if monitoring in low power states is required.

Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT output of

an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output).

V_CC

THERM

FAN_FAULT/REF

FAN_FAULT: Open-Drain Output. Asserted low when one or both fans stall. Requires a pull-up resistor to V_CC.

REF: Analog Input Reference for the THERM Input.

D1−

D1+

D2−

D2+

Cathode Connection for the First Thermal Diode or Diode-Connected Transistor.

Anode Connection for the First Thermal Diode or Diode-Connected Transistor.

Cathode Connection for the Second Thermal Diode or Diode-Connected Transistor.

Anode Connection for the Second Thermal Diode or Diode-Connected Transistor.

8-Level Analog Input. Used to determine the correct SMBus version and the SMBus address (in

fixed-and-discoverable mode) and to set the LLL bits in the UDID (in ARP-capable mode).

Open-Drain Output. SMBusALERT pin. Alerts the system in the case of out-of-limit events, such as over

temperature. Can be configured as sticky SMBus mode or comparator mode.

Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires pull-up resistor if not

provided elsewhere in the system.

Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires pull-up resistor if not already

provided in the system.

LOCATION

ALERT

SDA

SCL

Rev. 0 | Page 7 of 40

1...4 5 678 9 10...40

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