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Figure 33: Slide switch S1B (angle view).

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Figure 34: Slide switch S1B schematic.
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Figure 35: When slide switch S1B = FX2 PON, signal PS_EN is set to signal FX2_PS_EN driven by the EZ-USB FX2LP USB FX2 microcontroller under user control.

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S1B position	Default position	Effect on 1.2V, 1.5V and  2 V and 2.5 V 5V rails
FX2 PON (onoff)		1.2 V and 2.5 V rails controlled by USB FX2 microcontroller (signal FX2_PS_EN) PS_EN = FX2_PS_EN = 1 or 0
PON (offon)		1.2 V and 2.5 V rails always enabled (PS_EN = 1) PS_EN ≠ FX_PS_EN = 1 or 0

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