ADT7490(2016) データシートの表示（PDF） - ON Semiconductor

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ADT7490
(Rev.:2016)

Remote Thermal Monitor and Fan Controller with PECI Interface

ON Semiconductor 

GPIO1

GPIO2

THERM/

SMBALERT

TACH1

TACH2

TACH3

TACH4

PWM1

PWM2

PWM3

PECI

VTT

VCC

VCCP

+12VIN

+5VIN

+2.5VIN

IMON

D1+

D1−

D2+

D2−

ADT7490

ADDR SELECT

SCL SDA

ADT7490

GPIO

REGISTER

PERFORMANCE

MONITORING

THERMAL

PROTECTION

FAN SPEED

COUNTER

PWM REGISTERS

AND CONTROLLERS

(HF AND LF)

ACOUSTIC

ENHANCEMENT

PECI

INTERFACE

INPUT

SIGNAL

CONDITIONING

AND

ANALOG

MULTIPLEXER

SMBus

ADDRESS

SELECTION

SERIAL BUS

INTERFACE

ADDRESS

POINTER

REGISTER

PWM

CONFIGURATION

REGISTERS

INTERRUPT

MASKING

AUTOMATIC

FAN SPEED

CONTROL

DYNAMIC TMIN

CONTROL

ACOUSTIC

ENHANCEMENT

CONTROL

10-BIT

ADC

BAND GAP

REFERENCE

INTERRUPT

STATUS

REGISTERS

LIMIT

COMPARATORS

VALUE AND

LIMIT

REGISTERS

BAND GAP

TEMP. SENSOR

GND

Figure 1. Functional Block Diagram

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