ADM1029ARQZ-R7 datasheet(24/50 Pages) ONSEMI

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Rev. 1 | Page 24 of 50 | www.onsemi.com

MEASURE

FAN SPEED

FAN1 (REG 0x70)

FAN2 (REG 0x71)

CONFIGURE GPIO EVENT

MASK REGISTERS

(REG 0x38 – 0x3E)

CONFIGURE TEMP

COOLING ACTION

LOCAL TEMP (REG 0x48)

REMOTE 1 TEMP (REG 0x49)

REMOTE 2 TEMP (REG 0x4A)

CONFIGURE AIN EVENT

MASK REGISTERS

AIN1 (REG 0x58)

AIN2 (REG 0x59)

IS GPIO

ASSERTED?

YES

FAN RUNS AT ALARM

OR HOT-PLUG SPEED

GPIO EVENT MASK (CONFIGURE REG 0x38 FOR GPIO0,

REG 0x39 FOR GPIO1.....REG 0x3E FOR GPIO6)

BIT 0 = 1

FAN 1 RUNS AT ALARM OR

HOT-PLUG SPEED IF GPIO PIN

IS ASSERTED

BIT 1 = 1

FAN 2 RUNS AT ALARM OR

HOT-PLUG SPEED IF GPIO PIN

IS ASSERTED

BITS 2 – 7

DON'T CARE

PROGRAM FAN START

TEMPERATURE, TMIN

LOCAL TEMP (REG 0x80)

REMOTE 1 TEMP (REG 0x81)

REMOTE 2 TEMP (REG 0x82)

PROGRAM TEMP-TO-FAN

SPEED CONTROL

SLOPE, TRANGE

LOCAL TEMP (REG 0x88)

REMOTE 1 TEMP (REG 0x89)

REMOTE 2 TEMP (REG 0x8A)

CONFIGURE CONTROL

LOOP HYSTERESIS

LOCAL TEMP (REG 0x88)

REMOTE 1 TEMP (REG 0x89)

REMOTE 2 TEMP (REG 0x8A)

AIN EVENT MASK (CONFIGURE REG 0x58 FOR

AIN 0, REG 0x59 FOR AIN 1)

BIT 0 = 1

FAN 1 RUNS AT ALARM SPEED

IF AIN OUT-OF-LIMIT EVENT

OCCURS

BIT 1 = 1

FAN 2 RUNS AT ALARM SPEED

IF AIN OUT-OF-LIMIT EVENT

OCCURS

IS AIN

ASSERTED?

FAN RUNS AT

ALARM SPEED

AUTOMATIC FAN

SPEED CONTROL

CONFIGURATION

(REFER TO AUTOMATIC FAN SPEED

CONTROL FLOWCHART)

CONFIGURE FAN

SPIN-UP TIME

CONFIGURE PWM DRIVE

FREQUENCY

FAN1 (REG 0x68)

FAN2 (REG 0x69)

CONFIGURE TACH

OSCILLATOR FREQUENCY

FAN1 (REG 0x68)

FAN2 (REG 0x69)

BITS 2 – 7

DON'T CARE

Figure 17. Fan Configuration Flowchart (Continued)

ADM1029

ADM1029ARQZ-R7 数据表(PDF) 24 Page - ON Semiconductor

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