Rainbow Electronics MAX34441 - Manual (Page 42)

PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
MAX34441
42
If an error occurs while the device is attempting to write or clear the NV_FAULT_LOG, the device sets the CML bit in
STATUS_BYTE and STATUS_WORD; no bits are set in STATUS_CML. ALERT is asserted (if enabled in MFR_MODE).
See Figure 5.
USER NOTE: V
DD must be above 2.9V for the device to clear or log data into MFR_NV_FAULT_LOG.
Figure 5. MFR_NV_FAULT_LOG
Table 29. MFR_NV_FAULT_LOG
FAULT LOG INDEX 0
(255 BYTES)
FAULT LOG INDEX 1
(255 BYTES)
FAULT LOG INDEX 2
(255 BYTES)
STATUS VOLTAGE
CURRENT
TEMPERATURE
FAN SPEED
RAM
FLASH EACH FAULT IS WRITTEN INTO
THE NEXT FAULT LOG
EACH COMMAND READ
ACCESSES THE NEXT FAULT LOG
FAULT OCCURENCE
FAULT LOG INDEX 14
(255 BYTES)
MFR_NV_FAULT_LOG
BYTE PARAMETER BYTE PARAMETER
0 00h/FAULT_LOG_INDEX 128 READ_VOUT Index = 3, Page 2
2 FAULT_LOG_COUNT 130 READ_VOUT Index = 3, Page 3
4 MFR_TIME_COUNT (LSW) 132 READ_VOUT Index = 3, Page 4
6 MFR_TIME_COUNT (MSW) 134 RESERVED (0000h)
8 STATUS_BYTE/STATUS_CML 136 READ_VOUT Index = 4, Page 0
10 STATUS_WORD 138 READ_VOUT Index = 4, Page 1
12 STATUS_VOUT Pages 0/1 140 READ_VOUT Index = 4, Page 2
14 STATUS_VOUT Pages 2/3 142 READ_VOUT Index = 4, Page 3
16 STATUS_VOUT Page 4/00h 144 READ_VOUT Index = 4, Page 4
18 STATUS_MFR_SPECIFIC Pages 0/1 146 RESERVED (0000h)
20 STATUS_MFR_SPECIFIC Pages 2/3 148 READ_VOUT Index = 5, Page 0
22 STATUS_MFR_SPECIFIC Pages 4/00h 150 READ_VOUT Index = 5, Page 1
24 STATUS_MFR_SPECIFIC Pages 6/7 152 READ_VOUT Index = 5, Page 2
26 STATUS_MFR_SPECIFIC Pages 8/9 154 READ_VOUT Index = 5, Page 3
28 STATUS_MFR_SPECIFIC Pages 10/11 156 READ_VOUT Index = 5, Page 4
30 RESERVED (0000h) 158 RESERVED (0000h)
32 STATUS_FANS_1_2/00h 160 READ_VOUT Index = 6, Page 0
34 MFR_VOUT_PEAK Page 0 162 READ_VOUT Index = 6, Page 1
36 MFR_VOUT_PEAK Page 1 164 READ_VOUT Index = 6, Page 2
38 MFR_VOUT_PEAK Page 2 166 READ_VOUT Index = 6, Page 3
40 MFR_VOUT_PEAK Page 3 168 READ_VOUT Index = 6, Page 4