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changes.mady.by.user Thorsten Trenz

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changes.mady.by.user Sergio Pavesi

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titleS3 on position FX2 PON (PS_EN = FX2_PS_EN = 1 or 0 ).

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  1. Dynamic full power operation (PS_EN = 1): when the EZ-USB FX2LP USB FX2 microcontroller sets signal PS_EN = FX2_PS_EN = 1, power rails 1.2 V and 2.5 V are enabled.
    This setting can be useful for .
  2. Dynamic low power operation (PS_EN = 0): when the EZ-USB FX2LP USB FX2 microcontroller resets signal PS_EN = FX2_PS_EN = 0, the following components are switched off:

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Full power operation (PS_EN = 1): when slide switch S3 is in the right position (PON = power rails unconditionally on), signal PS_EN is set to power rail 3.3V. Thus power rails 1.2 V and 2.5 V are unconditionally enabled.

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titleS3 on position PON (PS_EN ≠ FX2_PS_EN = x; PS_EN = high ).

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Summary table

The table below summarizes all switching options implied by slide switch S3 and firmware signal FX2_PS_EN (under the standard assembly option).

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