ADM1266ACPZ-R7 datasheet(35/62 Pages) AD

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Data Sheet

ADM1266

Rev. A | Page 35 of 62

STORE_USER_ALL

Table 15. Register 0x15—STORE_USER_ALL

Bits

Bit Name

Type

Description

Not Applicable

STORE_USER_ALL

Send

This command copies the entire contents of the operating memory into the device

memory.

RESTORE_USER_ALL

Table 16. Register 0x16—RESTORE_USER_ALL

Bits

Bit Name

Type

Description

Not Applicable

RESTORE_USER_ALL

Send

This command downloads the stored user settings from device memory into

operating memory.

Capability

This command allows host systems to determine the capabilities of the PMBus device.

Table 17. Register 0x19—Capability

Bits

Bit Name

R/W

Description

Packet error checking

Checks packet error capability of the device. 1 is supported.

[6:5]

Maximum bus speed

Checks the PMBus speed capability of the device. 01 is the maximum supported bus speed,

400 kHz.

SMBALRT

Checks support for the SMBus alert pin and the SMBus alert response address protocol. 0 =

not supported.

[3:0]

Reserved

Reserved.

VOUT_MODE

The VOUT_MODE command sets the data format for output voltage related data. The data byte for the VOUT_MODE command consists

of a 3-bit mode and 5-bit exponent parameter. The 3-bit mode determines whether the device uses linear format or direct format for the

output voltage related commands. The 5-bit parameter sets the exponent value for linear format.

Table 18. Register 0x20—VOUT_MODE

Bits

Bit Name

R/W

Description

[7:5]

Mode

Returns the output voltage data format. The value is fixed at 000, which means that only linear

data format is supported.

[4:0]

Exponent N

R/W

Twos complement of Exponent N used in the output voltage related commands in linear data

format (V = Y × 2N), where Y is mantissa.

VOUT_COMMAND

The VOUT_COMMAND command sets the output voltage. Exponent N is set using VOUT_MODE[4:0].

Table 19. Register 0x21—VOUT_COMMAND

Bits

Bit Name

R/W

Description

[15:0]

Mantissa Y

R/W

16-bit unsigned integer Y value for linear data format (V = Y × 2N). N is defined using

VOUT_MODE[4:0].

VOUT_TRIM

The VOUT_TRIM command applies a fixed offset voltage to the VOUT_COMMAND value.

Table 20. Register 0x22—VOUT_TRIM

Bits

Bit Name

R/W

Description

[15:0]

Offset trim

R/W

Twos complement integer that applies a fixed offset voltage to the VOUT_COMMAND value.

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