MAX16067 datasheet(20/47 Pages) MAXIM

Part #	MAX16067

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

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20 _____________________________________________________________________________________

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 15).

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 16. 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 17). The fault flag is only set

when the matching enable bit in the critical fault enable

register is also set.

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 MAX16067 has

asserted the SMBus Alert output. Clear by writing a ‘1’.

See the SMBALERT (ALERT) section for more details.

Table 15. Deglitch Configuration

Table 16. 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

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