ISL68124

FN8796 Rev.2.00

Page 23 of 46

June 16, 2017

PMBus Command Detail

PAGE (00h)

Definition: Selects Controller 0, Controller 1, or both Controllers 0 and 1 to receive commands. All commands following this command

will be received and acted on by the selected controller or controllers.

Data Length in Bytes: 1

Data Format: Bit Field

Type: R/W

Default Value: 00h

Units: N/A

OPERATION (01h)

Definition: Sets enable state when configured for PMBus enable. Sets output voltage margin settings. The device always acts on faults

during margin. The following table reflects the valid settings for the device.

Paged or Global: Paged

Data Length in Bytes: 1

Data Format: Bit Field

Type: R/W

Default Value: 08h

COMMAND

PAGE (00h)

Format

Bit Field

Bit Position

7

6543210

Access

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Function

See Following Table

Default Value

0

0000000

BITS 7:4

BITS 3:0

PAGE

0000

0000

0

0000

0001

1

1111

1111

Both

COMMAND

OPERATION (01h)

Format

Bit Field

Bit Position

7

6543210

Access

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Function

See Following Table

Default Value

0

0001000

BIT NUMBER

PURPOSE

BIT VALUE

MEANING

Bits 7:6

Enable/Disable

00

Immediate off (decay)

01

Soft-off (Use TOFF_DELAY and TOFF_FALL)

10

On

Bits 5:4

00

VOUT_COMMAND

01

VOUT_MARGIN_LOW

10

VOUT_MARGIN_HIGH

11

Not used

Bits 3:2

Margin Response

10

Act on faults

Bit 1:0

Not Used

0

Not used