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→VCC-IO Settings
=== VCC-IO Settings ===
The VCC-IO level defines what voltage the inputs/outputs on the RIGHT side operate at (the target side). The inputs/outputs on the LEFT side (the ChipWhisperer capture side) are always 3.3V.
The VCC-IO level can be set to one of:
* Fixed 3.3V.
* Based on voltage on VREF pin of JP2 (20-pin target connector).
* Based on external voltage reference.
Normally you would use either "JP2.VREF" or "+3V3". All NewAE target boards will provide a signal on JP2.VREF which indicates the correct translation voltage. If using a simple breakout or your own target board, you may just wish to force use of 3.3V IO voltages however.
These settings are configured with switch SW1 and SW2. In addition, three LEDs will confirm your setting. For example here the board is set to output 3.3V reference signals:
[[File:cw506_vccio.jpg|400px]]
The current VCC-IO voltage is available on test point TP11 (just beside the 3 LEDs).
=== JP2.+3v3 Settings ===