ADM1266ACPZ-R7 datasheet(54/62 Pages) AD

54 / 62 page

ADM1266

Data Sheet

Rev. A | Page 54 of 62

USER_DATA

This command block reads/writes the user data.

Table 87. Register 0xE3—USER_DATA (for Block WR)

Byte

Bit Name

R/W

Description

Parameter length

Block W

Parameter data length, fixed to 3.

Data length

Block W

Data length.

Offset address (low)

Block W

The low 8-bit offset address of total user data.

Offset address (high)

Block W

The high 8-bit offset address of total user data.

Data length

Block R

Read back user data length, maximum value of N = 252. N must be a multiple value of 4.

[N:1]

Data

Block R

User data.

Table 88. Register 0xE3— USER_DATA (for Block W)

Byte

Bit Name

R/W

Description

Data length

Block W

Number of bytes of data for this block write.

Offset address (low)

Block W

The low 8-bit offset address of total user data.

Offset address (high)

Block W

The high 8-bit offset address of total user data.

[N:3]

Data

Block W

Data for user data, maximum value of N = 250.

POWERUP_COUNTER

This command reads the power-up counter from the device by the GUI.

Table 89. Register 0xE4—POWERUP_COUNTER

Byte

Bit Name

R/W

Description

Data length

Block W

The length of the power-up counter data that the ADM1266 returns, fixed to 2

[2:1]

Counter

Block W

Counter value

VOUT_RESISTOR

This command block reads/writes the resistor divider information.

Table 90. Register 0xE5—VOUT_RESISTOR (for Block WR)

Byte

Byte Name

R/W

Description

Parameter length

Block

Parameter data length, fixed to 1.

Resistor index

parameter

Block

The index of the resistor is set. When the index is 0xFF, it reads back all resistor configurations.

0 = R4, 1 = R5, 2 = R1, 3 = R2, 4 = R3 (see Figure 12).

Data length

Block R

Readback configuration data length. Set to 3 when resistor index parameter < 5, 15 when

resistor index parameter is 0xFF.

[15:1]

Data

Block R

Information for resistor.

Table 91. Register 0xE5—VOUT_RESISTOR (for Block W)

Byte

Bit Name

R/W

Description

Data length

Block W

Number of bytes of data for this block write.

Resistor index parameter

Block W

The index of the resistor.

[5:2]

Data

Block W

Data for resistor, maximum value of N = 5.

Table 92. Three Bytes of Data for Each Resistor

Bits

Bit Name

R/W

Description

[23:16]

Exponent

R/W

Twos complement Exponent N used in linear data format (X = Y × 2N).

Reserved

R/W

Reserved.

[14:0]

Mantissa

R/W

Twos complement Mantissa Y used in linear data format (X = Y × 2N).

ADM1266ACPZ-R7 数据表(PDF) 54 Page - Analog Devices

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ADM1266ACPZ-R7 数据表(PDF) 54 Page - Analog Devices

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