ADP1052ACPZ-R7 datasheet(61/113 Pages) AD

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Data Sheet

ADP1052

Rev. B | Page 61 of 113

CLEAR_FAULTS

CLEAR_FAULTS is a send byte, no data command. This command clears all PMBus fault bits in all PMBus status registers simultaneously.

Table 16. Register 0x03—CLEAR_FAULTS

Bits

Bit Name/Function

Type

Description

N/A

CLEAR_FAULTS

Send

Clears all bits in PMBus status registers (Register 0x78 to Register 0x7E) simultaneously.

WRITE_PROTECT

The WRITE_PROTECT command controls writing to the PMBus device. This command provides protection against accidental changes;

this command does not provide protection against deliberate or malicious changes to the configuration or operation of the device.

Table 17. Register 0x10—WRITE_PROTECT

Bits

Bit Name/Function

R/W

Description

Write Protect 1

R/W

Disables writes to all commands except the WRITE_PROTECT command.

Write Protect 2

R/W

Disables writes to all commands except the WRITE_PROTECT and OPERATION commands.

Write Protect 3

R/W

Disables writes to all commands except the WRITE_PROTECT, OPERATION, ON_OFF_CONFIG, and

VOUT_COMMAND commands.

[4:0]

Reserved

Reserved.

RESTORE_DEFAULT_ALL

RESTORE_DEFAULT_ALL is a send byte, no data command. This command downloads the factory default settings (including the basic

PMBus commands, the manufacturer specific extended commands (starting with 0xFE), and other data, such as the checksum, the

EEPROM password, and the chip password) from the EEPROM (Page 0 of the main block) into the registers.

Table 18. Register 0x12—RESTORE_DEFAULT_ALL

Bits

Bit Name/Function

Type

Description

N/A

RESTORE_DEFAULT_ALL

Send

Restores the factory default settings from the EEPROM to the registers.

STORE_USER_ALL

STORE_USER_ALL is a send byte, no data command. This command copies the entire contents of the registers into the EEPROM

(Page 1 of the main block) as the user settings. The settings are automatically restored on the power-up of VDD.

Table 19. Register 0x15—STORE_USER_ALL

Bits

Bit Name/Function

Type

Description

N/A

STORE_USER_ALL

Send

Saves the user settings from the registers to the EEPROM.

RESTORE_USER_ALL

RESTORE_USER_ALL is a send byte, no data command. This command downloads the stored user settings, including the basic PMBus

commands, the manufacturer specific extended commands (starting with 0xFE), and other data (for example, the checksum, the

EEPROM password, and the chip password) from the EEPROM (Page 1 of the main block) into the registers.

Table 20. Register 0x16—RESTORE_USER_ALL

Bits

Bit Name/Function

Type

Description

N/A

RESTORE_USER_ALL

Send

Restores the user settings from the EEPROM to the registers.

CAPABILITY

The CAPABILITY command summarizes the PMBus optional communication protocols supported by the ADP1052. The reading of this

command results in 0x20.

Table 21. Register 0x19—CAPABILITY

Bits

Bit Name/Function

R/W

Description

Packet error

Checks the packet error capability of the device.

0 = not supported.

[6:5]

Maximum bus speed

Checks the PMBus speed capability of the device.

01 = maximum bus speed of 400 kHz.

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