ADM1275 datasheet(41/48 Pages) AD

Part #	ADM1275

Description	Hot-Swap Controller and Digital Power

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41 / 48 page

Data Sheet

ADM1275

Rev. D | Page 41 of 48

READ_VOUT

Code: 0x8B, read word. Value after reset: 0x0000.

This command is supported on the ADM1275-1 and the ADM1275-3. The ADM1275-2 does not have a VOUT pin.

Table 27. Bit Descriptions for READ_VOUT Command

Bits

Bit Name

Settings

Description

[15:12]

Reserved

0000

Always reads as 0000.

[11:0]

VOUT

Output voltage from the VOUT pin measurement, expressed in ADC codes.

READ_IOUT

Code: 0x8C, read word. Value after reset: 0x0000.

Table 28. Bit Descriptions for READ_IOUT Command

Bits

Bit Name

Settings

Description

[15:12]

Reserved

0000

Always reads as 0000.

[11:0]

IOUT

Output current from the measurement through the sense resistor.

PMBUS_REVISION

Code: 0x98, read byte. Value after reset: 0x11.

Table 29. Bit Descriptions for PMBUS_REVISION Command

Bits

Bit Name

Settings

Description

[7:4]

Part I Revision

0001

Always reads as 0001, PMBus Specification Part I, Revision 1.1.

[3:0]

Part II Revision

0001

Always reads as 0001, PMBus Specification Part II, Revision 1.1.

MFR_ID

Code: 0x99, block read. Value after reset: 0x03 + ASCII “ADI”.

Table 30. Bit Descriptions for MFR_ID Command

Byte

Byte Name

Value

Description

0

Byte count

0x03

Always reads as 0x03, the number of data bytes that the block read command

should expect to read.

1

Character 1

0x41 or “A”

Always reads as 0x41.

2

Character 2

0x44 or “D”

Always reads as 0x44.

3

Character 3

0x49 or “I”

Always reads as 0x49.

MFR_MODEL

Code: 0x9A, block read. Value after reset: 0x09 + ASCII “ADM1275-x”.

Table 31. Bit Descriptions for MFR_MODEL Command

Byte

Byte Name

Value

Description

0

Byte count

0x09

Always reads as 0x09, the number of data bytes that the block read command

should expect to read.

1

Character 1

0x41 or “A”

Always reads as 0x41.

2

Character 2

0x44 or “D”

Always reads as 0x44.

3

Character 3

0x4D or “M”

Always reads as 0x4D.

4

Character 4

0x31 or “1”

Always reads as 0x31.

5

Character 5

0x32 or “2”

Always reads as 0x32.

6

Character 6

0x37 or “7”

Always reads as 0x37.

7

Character 7

0x35 or “5”

Always reads as 0x35.

8

Character 8

0x2D or “-”

Always reads as 0x2D.

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