ADP1048ARQZ-R7 datasheet(54/84 Pages) AD

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ADP1047/ADP1048

Data Sheet

Rev. 0 | Page 54 of 84

PIN_OP_WARN_LIMIT REGISTER

This register sets the upper input power (W) threshold that causes an input overpower warning condition.

Table 42. Register 0x6B—PIN_OP_WARN_LIMIT

Bits

Bit Name

R/W

Description

[15:11]

Exponent

Return the exponent (N) used in power linear mode format (X = Y × 2N). The exponent is set in the

exponent register (Register 0xFE39, Bits[2:0]).

[10:8]

High bits

R/W

Mantissa high bits (Y[10:8]) used in power linear mode format (X = Y × 2N).

[7:0]

Low byte

R/W

Mantissa low byte (Y[7:0]) used in power linear mode format (X = Y × 2N).

STATUS_BYTE REGISTER

This register returns the lower byte of the STATUS_WORD register. A value of 1 in this register indicates that a fault has occurred.

Table 43. Register 0x78—STATUS_BYTE

Bits

Bit Name

R/W

Description

BUSY

1 = device was busy and unable to respond.

PSON_OFF

1 = device is not providing power to the output.

VOUT_OV

1 = output overvoltage fault.

IOUT_OC

1 = output overcurrent fault.

VIN_UV

1 = input undervoltage fault.

TEMPERATURE

1 = temperature fault or warning.

CML

1 = communications, memory, or logic fault.

NONE_OF_THE_

ABOVE

1 = fault or warning not listed in Bits[7:1].

STATUS_WORD REGISTER

A value of 1 in this register indicates that a fault has occurred.

Table 44. Register 0x79—STATUS_WORD

Bits

Bit Name

R/W

Description

VOUT

1 = output voltage fault or warning.

IOUT/POUT

1 = output current or output power fault or warning.

INPUT

1 = input voltage, input current, or input power fault or warning.

MFR

1 = manufacturer-specific fault or warning.

POWER_GOOD#

1 = POWER_GOOD is negated.

FANS

1 = fan or airflow fault or warning.

OTHER

Always reads as 0.

UNKNOWN

1 = fault or warning not listed in Bits[15:1].

BUSY

1 = device was busy and unable to respond.

PSON_OFF

1 = device is not providing power to the output.

VOUT_OV

1 = output overvoltage fault.

IOUT_OC

1 = output overcurrent fault.

VIN_UV

1 = input undervoltage fault.

TEMPERATURE

1 = temperature fault or warning.

CML

1 = communications, memory, or logic fault.

NONE_OF_THE_

ABOVE

1 = fault or warning not listed in Bits[7:1].

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