ADM1266ACPZ-R7 datasheet(37/62 Pages) AD

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Data Sheet

ADM1266

Rev. A | Page 37 of 62

VOUT_UV_WARN_LIMIT

The VOUT_UV_WARN_LIMIT command sets the undervoltage threshold (in volts) measured at the sense/output pin, VHx/VPx, that

causes an undervoltage warning condition. Exponent N is set using VOUT_MODE[4:0].

Table 27. Register 0x43—VOUT_UV_WARN_LIMIT

Bits

Bit Name

R/W

Description

[15:0]

Mantissa Y

R/W

Unsigned Mantissa Y used in output voltage related commands in linear data format (V = Y × 2N).

VOUT_UV_FAULT_LIMIT

The VOUT_UV_FAULT_LIMIT command sets the undervoltage threshold value (in volts) measured at the sense/output pin, VHx/VPx,

that causes an undervoltage fault condition. Exponent N is set using VOUT_MODE[4:0].

Table 28. Register 0x44—VOUT_UV_FAULT_LIMIT

Bits

Bit Name

R/W

Description

[15:0]

Mantissa Y

R/W

Unsigned Mantissa Y used in output voltage related commands in linear data format (V = Y × 2N).

STATUS_BYTE

The STATUS_BYTE command returns one byte of information with a summary of the most critical faults.

Table 29. Register 0x78—STATUS_BYTE

Bits

Bit Name

R/W

Description

[7:6]

Reserved

Reserved.

VOUT_OV_FAULT

R/W

VOUT OV fault status.

[4:2]

Reserved

Reserved.

CML

R/W

Communication, memory, or logic event.

Reserved

Reserved.

STATUS_WORD

The STATUS_WORD command returns two bytes of information with a summary of the unit’s fault condition.

Table 30. Register 0x79—STATUS_WORD

Bits

Bit Name

R/W

Description

VOUT

R/W

Logic OR of STATUS_VOUT, Bits[7:0].

[14:6]

Reserved

Reserved.

VOUT_OV_FAULT

R/W

VOUT OV fault status.

[4:2]

Reserved

Reserved.

CML

R/W

Communication, memory, logic.

Reserved

Reserved.

STATUS_VOUT

The STATUS_VOUT command obtains the status of the rail comparators.

Table 31. Register 0x7A—STATUS_VOUT

Bits

Bit Name

R/W

Description

VOUT_OV_FAULT

VOUT OV fault status.

VOUT_OV_WARNING

VOUT OV warning status.

VOUT_UV_WARNING

VOUT UV warning status.

VOUT_UV_FAULT

VOUT UV fault status.

[3:0]

Reserved

Reserved.

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