Datasheet

LM25066I, LM25066IA

SNVS824C –JUNE 2012–REVISED MARCH 2013

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Table 41. READ_DIAGNOSTIC_WORD Format (continued)

Bit Meaning Default

9 TIMER_LATCHED_OFF 0

8 EXT_MOSFET_SHORTED 0

7 CONFIG_PRESET 1

6 DEVICE_OFF 1

5 VIN_UNDERVOLTAGE_FAULT 1

4 VIN_OVERVOLTAGE_FAULT 0

3 IIN_OC/PFET_OP_FAULT 0

2 OVER_TEMPERATURE_FAULT 0

1 CML_FAULT 0

0 CIRCUIT_BREAKER_FAULT 0

MFR_SPECIFIC_18: AVG_BLOCK_READ (E2h)

The AVG_BLOCK_READ command concatenates the DIAGNOSTIC_WORD with input and output average

telemetry information (IIN, VOUT, VIN, PIN) as well as TEMPERATURE to capture all of the operating

information of the part in a single PMBus™ transaction. The block is 12 bytes long with telemetry information

being sent out in the same manner as if an individual READ_AVG_XXX command had been issued (shown

below). AVG_BLOCK_READ also specifies that the VIN, VOUT, PIN, and IIN measurements are all time-aligned

whereas there is a chance they may not be if read with individual PMBus™ commands. To read data from the

AVG_BLOCK_READ command, use the SMBus Block Read protocol.

Table 42. AVG_BLOCK_READ Register Format

Byte Count (always 12) (1 byte)

DIAGNOSTIC_WORD (1 word)

AVG_IIN (1 word)

AVG_VOUT (1 word)

AVG_VIN (1 word)

AVG_PIN (1 word)

TEMPERATURE (1 word)

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