Datasheet
LM5066
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SNVS655G –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 LM5066. 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 LM5066 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 is also returned in the BLOCK_READ, BLACK_BOX_READ, and
AVG_BLOCK_READ operations.
Table 38. DIAGNOSTIC_WORD Format
Bit Meaning Default
15 VOUT_UNDERVOLTAGE_WARN 0
14 IIN_OP_WARN 0
13 VIN_UNDERVOLTAGE_WARN 0
12 VIN_OVERVOLTAGE_WARN 0
11 POWER GOOD 1
10 OVER_TEMPERATURE_WARN 0
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
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