RST pin on Omega2



  • I cannot find any documentation on the RST pin on Omega2 module.
    Does anyone know what it do and how can it be used?

    Kjell S.



  • I found some documentation about this pin in the data sheet for the AR9331.
    --- quote---
    7.5 Power On Sequence
    The AR9331 has an internal power on circuit
    reset. when all power inputs, including
    VDD33, VDD12 and VDD25, are ready, the
    RESET_L signal; will be released from low to
    high. This signal is connected to a digital
    counter which controls the digital reset and is
    released after 5 μs. When the digital reset goes
    from low to high, the CPU begins fetching
    instructions from the internal ROM or the
    external SPI in order to boot the system.
    --- end quote ----

    If I understand this correct this is an output that can be used to hold external chips in reset until power is good and CPU starts.

    Kjell S.



  • The Omega2 uses an MT7688. The AR9331 was used in the now discontinued original Omega.


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