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Table 14: Slide switch S2 settings overview (1.2 V and 2.5 V rails only).

To command signal FX2_PS_EN, read the reference firmware code.
IOD = 0x03; // Enable PS_ON and disable PROG_B
OED = 0x03; // Configure PS_ON and PROG as outputs

Slide switch S2 conditions the value of signal PS_EN.

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Table 14: Slide switch S2 settings overview ( 1.2V , 2.5V, VCCIO0).To command signal FX2_PS_EN, read the reference firmware code.
IOD = 0x03; // Enable PS_ON and disable PROG_B
OED = 0x03; // Configure PS_ON and PROG as outputs

S2 = FX2 PON
 

When slide switch S2 is in the left position ( = FX2 PON : power rails conditionally on depending on signal FX2_PS_EN), 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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