Datasheet

LM25066I, LM25066IA
www.ti.com SNVS824C –JUNE 2012–REVISED MARCH 2013
MFR_SPECIFIC_13: READ_AVG_VOUT (DDh)
The READ_AVG_VOUT command will report the 12-bit ADC measured average output voltage. The returned
value will be 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 44.
Table 38. READ_AVG_VOUT Register
Value Meaning Default
0h – 0FFFh Average of measured values for output voltage 0000h
MFR_SPECIFIC_14: READ_AVG_IIN (DEh)
The READ AVG_IIN command will report the 12-bit ADC measured current sense average voltage. The returned
value will be 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 44.
Table 39. READ_AVG_IIN Register
Value Meaning Default
0h – 0FFFh Average of measured values for current sense voltage 0000h
MFR_SPECIFIC_15: READ_AVG_PIN (DFh)
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 44.
Table 40. READ_AVG_PIN Register
Value Meaning Default
0h – 0FFFh Average of measured value for input voltage x input current sense voltage 0000h
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. 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 LM25066I/A 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
DIAGNOSTIC_WORD is also returned in the BLOCK_READ, BLACK_BOX_READ, and AVG_BLOCK_READ
operations.
Table 41. READ_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
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