LM5064PMHSLASHNOPB datasheet(45/64 Pages) TI2

45 / 64 page

LM5064

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SNVS718E – JUNE 2011 – REVISED FEBRUARY 2013

Table 36. READ_AVG_IIN Register

Value

Meaning

Default

0h – 0FFFh

Average of measured values for current

0000h

sense voltage

MFR_SPECIFIC_15: READ_AVG_PIN

The READ_AVG_PIN command will report the upper 12-bits of the average VIN x IIN product as measured by

the 12-bit ADC. You will read the default value (0000h) or previous data when the average data is not ready.

This data is read with the PMBus Read Word protocol. This register should use the coefficients shown in

Table 41.

Table 37. READ_AVG_PIN Register

Value

Meaning

Default

0h – 0FFFh

Average of measured value for input voltage

0000h

x input current sense voltage

MFR_SPECIFIC_16: BLACK_BOX_READ (E0h)

The BLACK BOX READ command retrieves the BLOCK READ data which was latched in at the first assertion of

SMBA by the LM5064. It is re-armed with the CLEAR_FAULTS command. It is the same format as the

BLOCK_READ registers, the only difference being that its contents are updated with the SMBA edge rather than

the internal clock edge. This command is read with the PMBus Block Read protocol.

MFR_SPECIFIC_17: READ_DIAGNOSTIC_WORD (E1h)

The READ_DIAGNOSTIC_WORD PMBus command will report all of the LM5064 faults and warnings in a single

read operation. The standard response to the assertion of the SMBA signal of issuing multiple read requests to

various status registers can be replaced by a single word read to the DIAGNOSTIC_WORD register. The

READ_DIAGNOSTIC_WORD command should be read with the PMBus Read Word protocol. The

READ_DIAGNOSTIC_WORD

also

returned

the

BLOCK_READ,

BLACK_BOX_READ,

and

AVG_BLOCK_READ operations.

Table 38. DIAGNOSTIC_WORD Format

Bit

Meaning

Default

VOUT UNDERVOLTAGE WARN

OC/OP WARN

VIN UNDERVOLTAGE WARN

VIN OVERVOLTAGE WARN

POWER GOOD

OVER TEMPERATURE WARN

TIMER LATCHED OFF

EXT MOSFET SHORTED

CONFIG PRESET

DEVICE OFF

VIN UNDERVOLTAGE FAULT

VIN OVERVOLTAGE FAULT

IIN OC/PFET OP FAULT

OVER TEMPERATURE FAULT

CML FAULT

CIRCUIT BREAKER FAULT

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