MAX16068 Datasheet, PDF (17/40 Pages) Maxim Integrated Products – 6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
If GPIO6 is configured as the EXTFAULT input/output
and EXTFAULT is pulled low by an external circuit, bit
r1Ch[6] is set.
The SMB Alert (ALERT) bit is set if the MAX16068 has
asserted the SMBus Alert output. Clear by writing a ‘1’.
See the SMBALERT (ALERT) section for more details.
Critical Faults
During normal operation, a fault condition can be stored
in the flash memory by setting the appropriate critical
fault enable bits. Set the appropriate critical fault enable
bits in registers r6Eh–r72h (see Table 12) for a fault con-
dition to trigger a critical fault.
Table 12. Critical Fault Configuration
REGISTER
FLASH
ADDRESS ADDRESS
BIT
RANGE
DESCRIPTION
Fault Information to Log
00 = Save failed line flags and ADC values in flash
[1:0]
01 = Save only failed line flags in flash
6Dh
26Dh
10 = Save only ADC values in flash
11 = Do not save anything
[2]
[7:3]
1 = Fault log triggered when EXTFAULT is pulled low externally
Not used
[0]
1 = Fault log triggered when MON1 is below its undervoltage threshold
[1]
1 = Fault log triggered when MON2 is below its undervoltage threshold
[2]
1 = Fault log triggered when MON3 is below its undervoltage threshold
6Eh
26Eh
[3]
1 = Fault log triggered when MON4 is below its undervoltage threshold
[4]
1 = Fault log triggered when MON5 is below its undervoltage threshold
[5]
1 = Fault log triggered when MON6 is below its undervoltage threshold
[7:6]
[3:0]
Not used
Not used
[4]
1 = Fault log triggered when MON1 is above its overvoltage threshold
6Fh
26Fh
[5]
1 = Fault log triggered when MON2 is above its overvoltage threshold
[6]
1 = Fault log triggered when MON3 is above its overvoltage threshold
[7]
1 = Fault log triggered when MON4 is above its overvoltage threshold
[0]
1 = Fault log triggered when MON5 is above its overvoltage threshold
70h
270h
[1]
1 = Fault log triggered when MON6 is above its overvoltage threshold
[7:2]
Not used
71h
271h
[7:0]
Not used
[4:0]
Not used
1 = EXTFAULT pulled low externally causes the device to stop monitoring until EN
72h
272h
[5]
is toggled or the autoretry delay expires (see Autoretry/Latch Mode section)
0 = EXTFAULT pulled low externally does not cause the device to stop monitoring
[7:6]
Not used
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