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MAX34440 Datasheet(PDF) 32 Page - Maxim Integrated Products |
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MAX34440 Datasheet(HTML) 32 Page - Maxim Integrated Products |
32 / 43 page ![]() PMBus 6-Channel Power-Supply Manager 32 Table 16. STATUS_BYTE STATUS_BYTE (78h) The STATUS_BYTE command returns 1 byte of information with a summary of the most critical faults. A value of 1 indi- cates that a fault or warning event has occurred and a 0 indicates otherwise. Bits for unsupported features are reported as 0. The STATUS_BYTE cannot be restored by the RESTORE_DEFAULT_ALL command. The STATUS_BYTE message content is described in Table 16. This command is read-only. Table 17. STATUS_WORD STATUS_WORD (79h) The STATUS_WORD command returns 2 bytes of information with a summary of the reason for a fault. The low byte of the STATUS_WORD is the same data as the STATUS_BYTE. Table 17 describes the STATUS_WORD message content. BIT BIT NAME MEANING 7:6 0 These bits always return a 0. 5 VOUT_OV An overvoltage fault has occurred. 4 IOUT_OC An overcurrent fault has occurred. 3 0 This bit always returns a 0. 2 TEMPERATURE A temperature fault or warning has occurred. 1 CML A communication, memory, or logic fault has occurred. 0 NONE OF THE ABOVE A fault or warning not listed in bits [7:1] has occurred. BIT BIT NAME MEANING 15 VOUT An output voltage fault or warning or TON_MAX_FAULT has occurred. 14 IOUT An overcurrent fault or warning has occurred. 13 0 This bit always returns a 0. 12 MFR A bit in STATUS_MFR_SPECIFIC has been set. 11 POWER_GOOD# A power-supply voltage has fallen from POWER_GOOD_ON to less than POWER_GOOD_OFF. 10:6 0 These bits always return a 0. 5 VOUT_OV An overvoltage fault has occurred. 4 IOUT_OC An overcurrent fault has occurred. 3 0 This bit always returns a 0. 2 TEMPERATURE A temperature fault or warning has occurred. 1 CML A communication, memory, or logic fault has occurred. 0 NONE OF THE ABOVE A fault or warning not listed in bits [7:1] has occurred. |
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