Datasheet

MAX34451 PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
www.maximintegrated.com
Maxim Integrated │ 52
Table 33. MFR_FAULT_RESPONSE Codes for LOCAL Channels
Note 1: ALERT is asserted if enabled when a new status bit is set. A status bit is latched when a particular fault occurs that causes
a fault response.
Note 2: Fault-freedoesnotincludeundervoltage.
Table 32. MFR_FAULT_RESPONSE Codes for GLOBAL Channels
Note 1: ALERT is asserted if enabled when a new status bit is set. A status bit is latched when a particular fault occurs that causes
a fault response.
Note 2: Fault-freedoesnotincludeundervoltage.
RESPONSE[1:0] FAULT RESPONSE
11
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
• Continuesoperation.
10
(Retry)
•
ShutsdownthepowersupplybydeassertingthePSENnoutput.
• Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
• WaitsforthetimeconguredinMFR_FAULT_RETRYandrestartsthesupplyiffault-free(Note2).
01
(Latchoff)
• LatchesoffthepowersupplybydeassertingthePSENnoutput.
• Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
00
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• Continuesoperationwithoutanyaction.
RESPONSE[1:0] FAULT RESPONSE
11
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
• Continuesoperation.
10
(Retry)
• Asserts all enabled FAULTn outputs.
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
• WaitsforthetimeconguredinMFR_FAULT_RETRYandthendeasserttheFAULTn outputs that were
assertediffault-free(Note2).
01
(Latchoff)
• Asserts all enabled FAULTn outputs.
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• LogsfaultintoMFR_NV_FAULT_LOGifNV_LOG=1.
00
•
Setsthecorrespondingfaultbitintheappropriatestatusregister(Note1).
• Continuesoperationwithoutanyaction.