Data Sheet
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
ADM1275
Bits
[15:12]
[11:0]
Bit Name
Reserved
VOUT
Settings
0000
Description
Always reads as 0000.
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
[15:12]
[11:0]
Bit Name
Reserved
IOUT
Settings
0000
Description
Always reads as 0000.
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
[7:4]
[3:0]
Bit Name
Part I Revision
Part II Revision
Settings
0001
0001
Description
Always reads as 0001, PMBus Specification Part I, Revision 1.1.
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
0
1
2
3
Byte Name
Byte count
Character 1
Character 2
Character 3
Value
0x03
0x41 or “A”
0x44 or “D”
0x49 or “I”
Description
Always reads as 0x03, the number of data bytes that the block read command
should expect to read.
Always reads as 0x41.
Always reads as 0x44.
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
0
1
2
3
4
5
6
7
8
Byte Name
Byte count
Character 1
Character 2
Character 3
Character 4
Character 5
Character 6
Character 7
Character 8
Value
0x09
0x41 or “A”
0x44 or “D”
0x4D or “M”
0x31 or “1”
0x32 or “2”
0x37 or “7”
0x35 or “5”
0x2D or “-”
Description
Always reads as 0x09, the number of data bytes that the block read command
should expect to read.
Always reads as 0x41.
Always reads as 0x44.
Always reads as 0x4D.
Always reads as 0x31.
Always reads as 0x32.
Always reads as 0x37.
Always reads as 0x35.
Always reads as 0x2D.
Rev. D | Page 41 of 48
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