Datasheet

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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.

Character 7

0x35 or “5”

Always reads as 0x35.

8 Character 8 0x2D or “-” Always reads as 0x2D.