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Full power operation (PS_EN = 1): when Dip switch S1B 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, 1.5 V and 2.5 V are unconditionally enabled.
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The table below summarizes all switching options implied by Dip switch S1B and firmware signal FX2_PS_EN (under the standard assembly option).
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(1) R102 unpopulated / R103 populated (2) R102 populated / R103 unpopulated |