ADP1052ACPZ-R7 datasheet(54/113 Pages) AD

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ADP1052

Data Sheet

Rev. B | Page 54 of 113

PMBus COMMAND SET

Table 12. PMBus/SMBus Command List Overview

Command

Code

Command Name

PMBus/

SMBus

Transaction

Type1

Number

of Data

Bytes

Default

Value2 Description

0x01

OPERATION

R/W

0x00

Turns the unit on and off in conjunction with the input from

the CTRL pin.

0x02

ON_OFF_CONFIG

R/W

0x00

Requires a combination of the CTRL pin and serial bus

commands to turn the unit on and off.

0x03

CLEAR_FAULTS

Send byte

N/A

Clears all bits in the PMBus status registers simultaneously.

0x10

WRITE_PROTECT

R/W

0x00

Protects against accidental writes to the PMBus device.

Reads are allowed.

0x12

RESTORE_DEFAULT_ALL

Send byte

N/A

Downloads the factory default settings from EEPROM (Page 0)

to registers.

0x15

STORE_USER_ALL

Send byte

N/A

Saves the user settings from the registers to the EEPROM

(Page 1).

0x16

RESTORE_USER_ALL

Send byte

N/A

Downloads the user settings from the EEPROM (Page 1) to

the registers.

0x19

CAPABILITY

0x20

Allows the host system to determine the capabilities of the

PMBus device.

0x20

VOUT_MODE

0x16

Sets/reads the formats for the VOUT related commands.

0x21

VOUT_COMMAND

R/W

0x0000 Sets the VOUT to the commanded value.

0x22

VOUT_TRIM

R/W

0x0000 Applies a fixed offset voltage to the output voltage

command value.

0x23

VOUT_CAL_OFFSET

R/W

0x0000 Applies a fixed offset voltage to the output voltage

command value.

0x24

VOUT_MAX

R/W

0x0000 Sets an upper limit on the output voltage.

0x25

VOUT_MARGIN_HIGH

R/W

0x0000 When the OPERATION command is set to margin high,

Command 0x25 defines the voltage output setting.

0x26

VOUT_MARGIN_LOW

R/W

0x0000 When the OPERATION command is set to margin low,

Command 0x26 defines the voltage output setting.

0x27

VOUT_TRANSITION_RATE

R/W

0x7BFF Sets the rate at which the output changes voltage.

0x28

VOUT_DROOP

R/W

0x0000 Sets the rate at which the output voltage changes with the

output current.

0x29

VOUT_SCALE_LOOP

R/W

0x0001 Establishes the scale factor for setting the output voltage,

which is related to the resistor divider.

0x2A

VOUT_SCALE_MONITOR

R/W

0x0001 Establishes the scale factor for the READ_VOUT command,

which typically can be the same as the VOUT_SCALE_LOOP

command.

0x33

FREQUENCY_SWITCH

R/W

0x0031 Sets the switching frequency of the output voltage.

0x35

VIN_ON

R/W

0x0000 Sets the input voltage at which the unit starts the power

conversion.

0x36

VIN_OFF

R/W

0x0000 Sets the input voltage at which the unit stops the power

conversion.

0x38

IOUT_CAL_GAIN

R/W

0x0000 Establishes the scale factor for the READ_IOUT command.

0x40

VOUT_OV_FAULT_LIMIT

R/W

0x0000 Sets the limit for triggering the OV_FAULT flag.

0x41

VOUT_OV_FAULT_RESPONSE R/W

0x00

Establishes the fault response for the OV_FAULT flag.

0x44

VOUT_UV_FAULT_LIMIT

R/W

0x0000 Sets the limit for triggering the VOUT_UV_FAULT flag.

0x45

VOUT_UV_FAULT_RESPONSE R/W

0x00

Establishes the fault response for the VOUT_UV_FAULT flag.

0x46

IOUT_OC_FAULT_LIMIT

R/W

0x0000 Sets the limit for triggering the OC_FAULT flag.

0x47

IOUT_OC_FAULT_RESPONSE R/W

0x00

Establishes the fault response for the OC_FAULT flag.

0x48

IOUT_OC_LV_FAULT_LIMIT

R/W

0x0000 Sets the voltage threshold in cases where the response to

an overcurrent condition is to operate in a constant current

mode unless the output voltage is pulled below the

specified limit value.

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