Datasheet

ADM1275 Data Sheet
Rev. D | Page 36 of 48
PMBus COMMAND REFERENCE
Register addresses are in hexadecimal format.
Table 11. PMBus Command Summary
Command Code Command Name SMBus Transaction Type Number of Data Bytes Default Value at Reset
0x01 OPERATION Read/write byte 1 0x80
0x03
CLEAR_FAULTS
Send byte
0
Not applicable
0x19 CAPABILITY Read byte 1 0xB0
0x42 VOUT_OV_WARN_LIMIT Read/write word 2 0x0FFF
0x43 VOUT_UV_WARN_LIMIT Read/write word 2 0x0000
0x4A IOUT_OC_WARN_LIMIT Read/write word 2 0x0FFF
0x57
VIN_OV_WARN_LIMIT
Read/write word
2
0x0FFF
0x58 VIN_UV_WARN_LIMIT Read/write word 2 0x0000
0x78 STATUS_BYTE Read byte 1 0x00
0x79 STATUS_WORD Read word 2 0x0000
0x7A STATUS_VOUT Read byte 1 0x00
0x7B STATUS_IOUT Read byte 1 0x00
0x7C
STATUS_INPUT
Read byte
1
0x00
0x80 STATUS_MFR_SPECIFIC Read byte 1 0x00
0x88 READ_VIN Read word 2 0x0000
0x8B READ_VOUT Read word 2 0x0000
0x8C READ_IOUT Read word 2 0x0000
0x98 PMBUS_REVISION Read byte 1 0x11
0x99 MFR_ID Block read 1 (byte count) + 3 (data) 0x03 + ASCII “ADI”
0x9A MFR_MODEL Block read 1 (byte count) + 9 (data)
0x09 + ASCII “ADM1275-
x”
1
0x9B MFR_REVISION Block read 1 (byte count) + 1 (data) 0x01 + ASCII “1”
0xD0 PEAK_IOUT Read/write word 2 0x0000
0xD1
PEAK_VIN
Read/write word
2
0x0000
0xD2 PEAK_VOUT Read/write word 2 0x0000
0xD3 PMON_CONTROL Read/write byte 1 0x00
0xD4 PMON_CONFIG Read/write byte 1 0x2C
0xD5 ALERT1_CONFIG Read/write word 2 0x0000
0xD6 ALERT2_CONFIG Read/write word 2 0x8000
0xD7
IOUT_WARN2_LIMIT
Read/write word
2
0x0000
0xD8 DEVICE_CONFIG Read/write byte 1 0x00
0xD9 POWER_CYCLE Send byte 0 Not applicable
1
The character “x” in the string is 1, 2, or 3, depending on the model of the ADM1275 that is being queried (ADM1275-1, ADM1275-2, or ADM1275-3).