PMBus 6-Channel Power-Supply Manager

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READ_VOUT (8Bh)

The READ_VOUT command returns the actual measured (not commanded) output voltage. READ_VOUT is measured

and updated every 5ms. The 2 data bytes are in DIRECT format.

READ_IOUT (8Ch)

The READ_IOUT command returns the latest measured current value. READ_IOUT is measured and updated every

200ms. The 2 data bytes are in DIRECT format.

READ_TEMPERATURE_1 (8Dh)

The READ_TEMPERATURE_1 command returns the temperature returned from the temperature sensor.

READ_TEMPERATURE_1 returns 7FFFh if the sensor is faulty and 0000h if the sensor is disabled. READ_TEMPERATURE_1

is measured and updated once a second. The 2 data bytes are in DIRECT format.

PMBUS_REVISION (98h)

The PMBUS_REVISION command returns the revision of the PMBus specification to which the device is compliant. The

command has 1 data byte. Bits [7:4] indicate the revision of PMBus specification Part I to which the device is compli-

ant. Bits [3:0] indicate the revision of PMBus specification Part II to which the device is compliant. This command is

read-only. The PMBUS_REVISION value returned is always 11h, which indicates that it is compliant with Part I Rev 1.1

and Part II Rev 1.1.

MFR_ID (99h)

The MFR_ID command returns the text (ISO/IEC 8859-1) character of the manufacturer’s (Maxim) identification. The

default MFR_ID value is 4Dh (M). This command is read-only.

MFR_MODEL (9Ah)

The MFR_MODEL command returns the text (ISO/IEC 8859-1) character of the device model number. The default

MFR_MODEL value is 51h (Q). This command is read-only.

MFR_REVISION (9Bh)

The MFR_REVISION command returns two text (ISO/IEC 8859-1) characters that contain the device revision numbers

for hardware (upper byte) and firmware (lower byte). The default MFR_REVISION value is 3030h (00). This command

is read-only.

MFR_LOCATION (9Ch)

The MFR_LOCATION command loads the device with text (ISO/IEC 8859-1) characters that identify the facility that

manufactures the power supply. The maximum number of characters is 8. This data is written to internal flash using

the STORE_DEFAULT_ALL command. The factory default text string value is 10101010.

MFR_DATE (9Dh)

The MFR_DATE command loads the device with text (ISO/IEC 8859-1) characters that identify the date of manu-

facture of the power supply. The maximum number of characters is 8. This data is written to internal flash using the

STORE_DEFAULT_ALL command. The factory default text string value is 10101010.

MFR_SERIAL (9Eh)

The MFR_SERIAL command loads the device with text (ISO/IEC 8859-1) characters that uniquely identify the device.

The maximum number of characters is 8. This data is written to internal flash using the STORE_DEFAULT_ALL com-

mand. The factory default text string value is 10101010.