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TPS659037: INT for AM5728

g.f.
Guru 15520 points
Part Number: TPS659037
Other Parts Discussed in Thread: AM5728

Hi,

My customer will going to use TPS659037 for AM5728 power supply.
They have a following questions:

Q1.
In TPS659037 INT2 source, there are (1)WDT, (2)RTC_TIMER, (3)RTC_ALARM, (4)RESET_IN.
For what purpose does AM5728 use above interrupt(1)-(4)?
Is it necessary to detect with INT signal?

Q2.
Is above (4)RESET_IN required in the configuration of "Figure 3 Reset Connections with POWERHOLD Configuration"
in following user's guide?
www.tij.co.jp/.../sliu011f.pdf

best regards,
g.f.

  • 0
    TI__Genius 10000 points

    G.F.,

    Hi, please see our register map for details on each interrupt: http://www.ti.com/lit/ug/sliu015a/sliu015a.pdf

    Generally, it is not necessary to detect any interrupts. This is up to the system design on what information from the TPS659037 you feel is important to know or act on. The INT2 source gives you the option to monitor watchdog, the real time clock, and the RESET_IN pin. You would unmask these if you wanted to know when one of these events occurred.

    If RESET_IN is not used, you should tie it to VRTC. If RESET_IN is low, the signal acts as a gating conditions for the device - preventing it from turning on.

    Thanks,

    Nastasha