Datasheet

MAX34451 PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
www.maximintegrated.com
Maxim Integrated │ 50
Note 1: ChannelsconfiguredtomonitorcurrentmustbeconfiguredasGLOBAL.AlsoPAGES12–15mustbeconfiguredasGLOBAL.
Note 2: TheFILTERselectiondoesnotapplytotemperatureorsequencingfaults.
Note 3: AllenabledtemperaturesensorfaultsarelogicallyORedtogether.
Note 4: If the channel is configured to measure current, these bits are ignored.
Note 5: ThesebitsareignoredforPAGES12–15.
Note 6: Depends on whether the channel is configured to monitor voltage or current.
Table 30. MFR_FAULT_RESPONSE (D9h)
BIT NAME MEANING
31:27 0
Thesebitsalwaysreturna0.
26 FAULT2_RESPONSE_ENABLE
0=FAULT2 response disabled
1 = FAULT2 response enabled
25 FAULT1_RESPONSE_ENABLE
0=FAULT1 response disabled
1 = FAULT1 response enabled
24 FAULT0_RESPONSE_ENABLE
0=FAULT0 response disabled
1 = FAULT0 response enabled
23:19 0
Thesebitsalwaysreturna0.
18 FAULT2_ASSERT_ENABLE
0=FAULT2 assertion disabled
1 = FAULT2 assertion enabled
17 FAULT1_ASSERT_ENABLE
0=FAULT1 assertion disabled
1 = FAULT1 assertion enabled
16 FAULT0_ASSERT_ENABLE
0=FAULT0 assertion disabled
1 = FAULT0 assertion enabled
15 NV_LOG
0=DonotlogthefaultintoMFR_NV_FAULT_LOG
1=LogthefaultintoMFR_NV_FAULT_LOG
14 GLOBAL
0=LOCAL(affectonlytheselectedpage)
1=GLOBAL(Note1).
13:12 FILTER[1:0]
Continuousexcursiontimebeforeafaultorwarningis
declaredandactionistaken(Note2).
00=Immediate
01=2ms
10=3ms
11 = 4ms
11 0
Thisbitalwaysreturnsa0.
10:8 ALARM_CONFIG[2:0] SeeTable31.
7:6 OT_FAULT_LIMIT_RESPONSE[1:0] SeeTables32and33(Note3).
5:4
TON_MAX_FAULT_LIMIT_RESPONSE[1:0]
(alsoappliestoMFR_TON_SEQ_MAX)
SeeTables32and33(Notes4and5).
3:2 VOUT_UV_FAULT_LIMIT_RESPONSE[1:0] SeeTables32and33(Note4).
1:0
VOUT_OV_FAULT_LIMIT_RESPONSE[1:0]
IOUT_OC_FAULT_LIMIT_RESPONSE[1:0]
SeeTables32and33(Note6).