Rainbow Electronics MAX16068 User Manual
Page 16
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MAX16068
6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
Deglitch
Fault conditions are detected at the end of each conver-
sion. When the voltage on an input falls outside a moni-
tored threshold for one acquisition, the input multiplexer
remains on that channel and performs several succes-
sive conversions. To trigger a fault, the input must stay
outside the threshold for a certain number of acquisitions
as determined by the deglitch setting in r74h[6:5] (see
Table 10).
Fault Flags
Fault flags indicate the fault status of a particular input.
The fault flag of any monitored input in the device can be
read at any time from registers r1Bh and r1Ch, as shown
in Table 11. Clear a fault flag by writing a ‘1’ to the appro-
priate bit in the flag register. Unlike the fault signals sent
to the fault outputs, these bits are masked by the critical
fault enable bits (see Table 12). The fault flag is only set
when the matching enable bit in the critical fault enable
register is also set.
Table 10. Deglitch Configuration
Table 11. Fault Flags
REGISTER
ADDRESS
FLASH
ADDRESS
BIT RANGE
DESCRIPTION
74h
274h
[6:5]
Voltage Comparator Deglitch Configuration
00 = 2 cycles
01 = 4 cycles
10 = 8 cycles
11 = 16 cycles
REGISTER
ADDRESS
BIT RANGE
DESCRIPTION
1Bh
[0]
MON1 undervoltage threshold
[1]
MON2 undervoltage threshold
[2]
MON3 undervoltage threshold
[3]
MON4 undervoltage threshold
[4]
MON5 undervoltage threshold
[5]
MON6 undervoltage threshold
[7:6]
Reserved
1Ch
[0]
MON1 overvoltage threshold
[1]
MON2 overvoltage threshold
[2]
MON3 overvoltage threshold
[3]
MON4 overvoltage threshold
[4]
MON5 overvoltage threshold
[5]
MON6 overvoltage threshold
[6]
External fault (EXTFAULT)
[7]
SMB alert