ISL68124

FN8796 Rev.2.00

Page 22 of 46

June 16, 2017

PMBus Use Guidelines

All commands can be read at any time.

Always disable the outputs when writing commands that change device settings. Exceptions to this rule are commands intended to be

written while the device is enabled, for example, OPERATION.

PMBus Data Formats

Direct (D)

The Direct data format is a 2-byte two’s complement binary integer.

Bit Field (BIT)

Break down of Bit Field is provided in “PMBus Command Detail” on page 23.

8Dh READ_TEMPERATURE_1

Reports power stage temperature measurement Read Direct

N/A

N/A

8Eh READ_TEMPERATURE_2

Reports TMON0 temperature measurement

Read Direct

N/A

N/A

8Fh READ_TEMPERATURE_3

Reports TMON1 temperature measurement

Read Direct

N/A

N/A

96h READ_POUT

Reports output power

Read Direct

N/A

N/A

97h READ_PIN

Reports input power

Read Direct

N/A

N/A

98h PMBUS_REVISION

Reports specific events

Read Bit

33h

Revision 1.3

ADh IC_DEVICE_ID

Reports device identification information

Block

Read

Bit

49D21E00h

ISL68124

AEh IC_DEVICE_REV

Reports device revision information

Block

Read

Bit

N/A

N/A

E7h APPLY_SETTINGS

Instructs device to apply PMBus setting changes

Write Bit

01h

N/A

F2h RESTORE_CONFIG

Allows selection of configurations from NVM

Write Bit

N/A

N/A

CODE

COMMAND NAME

DESCRIPTION

TYPE

DATA

FORMAT

DEFAULT

VALUE

DEFAULT SETTING