MAX16068 datasheet(17/40 Pages) MAXIM

Part #	MAX16068

Description	6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

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Manufacturer	MAXIM [Maxim Integrated Products]

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______________________________________________________________________________________ 17

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

ADDRESS

FLASH

ADDRESS

BIT

RANGE

DESCRIPTION

6Dh

26Dh

[1:0]

Fault Information to Log

00 = Save failed line flags and ADC values in flash

01 = Save only failed line flags in flash

10 = Save only ADC values in flash

11 = Do not save anything

[2]

1 = Fault log triggered when EXTFAULT is pulled low externally

[7:3]

Not used

6Eh

26Eh

[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

[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]

Not used

6Fh

26Fh

[3:0]

Not used

[4]

1 = Fault log triggered when MON1 is above its overvoltage threshold

[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

70h

270h

[0]

1 = Fault log triggered when MON5 is above its overvoltage threshold

[1]

1 = Fault log triggered when MON6 is above its overvoltage threshold

[7:2]

Not used

71h

271h

[7:0]

Not used

72h

272h

[4:0]

Not used

[5]

1 = EXTFAULT pulled low externally causes the device to stop monitoring until EN

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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