ADM1029ARQZ-R7 datasheet(26/50 Pages) ONSEMI

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BIT 0 = 1

CFAULT ASSERTED IF AIN VALUE EXCEEDS AIN HIGH LIMIT

BIT 1 = 1

FANS RUN ALARM SPEED IF AIN VALUE EXCEEDS AIN HIGH LIMIT

BIT 2 = 1

INT ASSERTED IF AIN VALUE EXCEEDS AIN HIGH LIMIT

BIT 3 = 0

ALARM GENERATED (INT, CFAULT, OR ALARM SPEED) WHEN AIN GOES BELOW AIN LOW LIMIT

BIT 3 = 1

ALARM GENERATED (INT, CFAULT, OR ALARM SPEED) WHEN AIN GOES ABOVE AIN LOW LIMIT

BIT 4 = 1

CFAULT ASSERTED IF AIN VALUE EXCEEDS AIN LOW LIMIT. BIT 3 DECIDES WHETHER CFAULT

IS ASSERTED GOING ABOVE OR BELOW THE LOW LIMIT

BIT 5 = 1

FANS RUN ALARM SPEED IF AIN VALUE CROSSES THE AIN LOW LIMIT. BIT 3 DECIDE WHETHER

ALARM SPEED IS TRIGGERED GOING ABOVE OR BELOW THE LOW LIMIT

BIT 6 = 1

INT ASSERTED IF AIN VALUE CROSSES THE AIN LOW LIMIT. BIT 3 DECIDES WHETHER INT IS

ASSERTED GOING ABOVE OR BELOW THE LOW LIMIT

BIT 7 = 1

THIS BIT LATCHES AN OUT-OF-LIMIT AIN EVENT. CLEARED BY WRITING A '0'

AIN PINS BEHAVIOR (REG 0x50 CONFIGURES AIN0, REG 0x51 CONFIGURES AIN1)

BIT 0 = 0

PIN 19 CONFIGURED AS AIN0

BIT 1 = 0

PIN 20 CONFIGURED AS AIN1

BIT 2 – 7

RESERVED FOR OTHER

FUNCTIONS

AIN PINS ENABLE (REG 0x05)

ENABLE PINS FOR AIN

FUNCTION

(REGISTER 0x05)

CONFIGURE AIN PINS

BEHAVIOR

AIN0 (REG 0x50)

AIN1 (REG 0x51)

CONFIGURE AIN EVENT

MASK

AIN0 (REG 0x58)

AIN1 (REG 0x59)

BIT 0 = 1

RUN FAN 1 AT ALARM SPEED IF AIN OUT-OF-

LIMIT EVENT IS DETECTED

BIT 1 = 1

RUN FAN 2 AT ALARM SPEED IF AIN OUT-OF-

LIMIT EVENT IS DETECTED

BITS 2 – 7

RESERVED – READ BACK ZERO

AIN EVENT MASK

(CONFIGURE REG 0x58 FOR

AIN0, REG 0x59 FOR AIN1)

IS AIN

VALUE >

AIN HIGH

LIMIT?

CFAULT

YES

FANS RUN ALARM SPEED

YES

INT

AIN ABOVE OR

BELOW LOW AIN

LIMIT?

0 = ALARM BELOW AIN LOW LIMIT

1 = ALARM ABOVE AIN LOW LIMIT

HAS AIN VALUE

EXCEEDED AIN

LOW LIMIT?

CFAULT

YES

FANS RUN ALARM SPEED

YES

INT

IS AIN

VALUE >

AIN HIGH

LIMIT?

IS AIN

VALUE >

AIN HIGH

LIMIT?

HAS AIN VALUE

EXCEEDED AIN

LOW LIMIT?

HAS AIN VALUE

EXCEEDED AIN

LOW LIMIT?

CONFIGURE AIN

HIGH LIMITS

AIN0 (REG 0xA8)

AIN1 (REG 0xA9)

CONFIGURE AIN

LOW LIMITS

AIN0 (REG 0xB0)

AIN1 (REG 0xB1)

MEASURE AIN

VOLTAGES

AIN0 (REG 0xB8)

AIN1 (REG 0xB9)

Figure 18. Configuring AIN0 and AIN1 Pins

ADM1029

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