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ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - power supply controllers/monitors 3 mA TQFN 40 EP (6x6)
27282930313233343536
MAX34446
PMBus Power-Supply Data Logger
31Maxim Integrated
If the device is not enabled to measure either current or voltage, or if a temperature sensor is disabled, the associated
fault-log byte position returns 0000h.
There is a FAULT_LOG_COUNT (16-bit counter) at the beginning of each fault log that indicates which fault log is
the latest. This counter rolls over should more than 65,535 faults be logged. This counter is not cleared when the
CLEAR_NV_FAULT_LOG bit in MFR_MODE is toggled. Table 19 describes the 255 bytes returned by the
MFR_NV_FAULT_LOG command.
USER NOTE: V
DD
must be above 2.9V for the device to clear or log data into MFR_NV_FAULT_LOG. During
a write to the fault log, the device temporarily stops monitoring and does not respond to SMBus commands.
Table 19. MFR_NV_FAULT_LOG
BYTE PARAMETER BYTE PARAMETER
0 00h/FAULT_LOG_INDEX 128 DATA BUFFER 34
2 FAULT_LOG_COUNT 130 DATA BUFFER 35
4 MFR_TIME_COUNT (LSW) 132 DATA BUFFER 36
6 MFR_TIME_COUNT (MSW) 134 DATA BUFFER 37
8 STATUS_BYTE / STATUS_CML 136 DATA BUFFER 38
10 STATUS_WORD 138 DATA BUFFER 39
12 STATUS_VOUT Pages 0/1 140 DATA BUFFER 40
14 STATUS_VOUT Pages 1/2 142 DATA BUFFER 41
16 STATUS_MFR_SPECIFIC Pages 0/1 144 DATA BUFFER 42
18 STATUS_MFR_SPECIFIC Pages 2/3 146 DATA BUFFER 43
20 STATUS_MFR_SPECIFIC Pages 4/5 148 DATA BUFFER 44
22 STATUS_MFR_SPECIFIC Page 6/00h 150 DATA BUFFER 45
24 RESERVED (0000h) 152 DATA BUFFER 46
26 RESERVED (0000h) 154 DATA BUFFER 47
28 RESERVED (0000h) 156 DATA BUFFER 48
30 CURRENT_CHANNELS/00h (Note 1) 158 DATA BUFFER 49
32 READ_VOUT or IOUT Page 0 160 DATA BUFFER 50
34 READ_VOUT or IOUT Page 1 162 DATA BUFFER 51
36 READ_VOUT or IOUT Page 2 164 DATA BUFFER 52
38 READ_VOUT or IOUT Page 3 166 DATA BUFFER 53
40 MFR_VOUT or IOUT PEAK Page 0 168 DATA BUFFER 54
42 MFR_VOUT or IOUT PEAK Page 1 170 DATA BUFFER 55
44 MFR_VOUT or IOUT PEAK Page 2 172 DATA BUFFER 56
46 MFR_VOUT or IOUT PEAK Page 3 174 DATA BUFFER 57
48 MFR_VOUT_MIN or IOUTAVG Page 0 176 DATA BUFFER 58
50 MFR_VOUT_MIN or IOUTAVG Page 1 178 DATA BUFFER 59
52 MFR_VOUT_MIN or IOUTAVG Page 2 180 DATA BUFFER 60
54 MFR_VOUT_MIN or IOUTAVG Page 3 182 DATA BUFFER 61
56 RESERVED (0000h) 184 DATA BUFFER 62
58 BUFFER INDEX/NUMBER_OF_CH (Notes 2, 3) 186 DATA BUFFER 63
60 DATA BUFFER 0 188 DATA BUFFER 64
62 DATA BUFFER 1 190 DATA BUFFER 65
64 DATA BUFFER 2 192 DATA BUFFER 66