ISL68147

FN8880 Rev.2.00

Page 37 of 47

Jul 14, 2017

STATUS_WORD (79h)

Definition: Returns a summary of the device’s fault status. Based on the information in these bytes, the host can get more information

by reading the appropriate status registers. A fault in either output will be reported here. The low byte of the STATUS_WORD contains

the same information as the STATUS_BYTE (78h) command.

Paged or Global: Global

Data Length in Bytes: 2

Data Format: Bit Field

Type: Read Only

Default Value: N/A

COMMAND

STATUS_WORD (79h)

Format

Bit Field

Bit Position

15

14

13

12

11

10

9

8

7

654

32

10

Access

RR

RR

RR

RRR

RR

RR

RRR

Function

See Following Table

BIT NUMBER

STATUS BIT NAME

MEANING

15

An output voltage fault has occurred.

14

IOUT

An output current fault has occurred.

13

INPUT

An input voltage fault has occurred.

12

MFR_SPECIFIC

A manufacturer specific event has occurred.

11

POWER_GOOD #

The POWER_GOOD signal, if present, is negated. (Note 8)

10:7

Not Used

Not used

6

OFF

This bit is asserted if the unit is not providing power to the output, regardless of the reason, including

simply not being enabled.

5

VOUT_OV_FAULT

An output overvoltage fault has occurred.

4

IOUT_OC_FAULT

An output overcurrent fault has occurred.

3

VIN_UV_FAULT

An input undervoltage fault has occurred.

2

TEMPERATURE

A temperature fault or warning has occurred.

1

CML

A communications, memory, or logic fault has occurred.

0

None of the Above

A status change other than those listed above has occurred.

NOTE:

8. If the POWER_GOOD# bit is set, this indicates that the POWER_GOOD signal, if present, is signaling that the output power is not good.