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Warning

The firmware actually changes (it runs on USB FX2 microcontroller's RAM) only when

you reset the USB FX2 module;
you power off and power on the USB FX2 module;
you write the USB FX2 microcontroller's RAM (RAM for CyConsole and xxx for CyControl), the new firmware is lost if the USB FX2 module goes under reset or power off/on cycle).

FPGA Configuration (bitstream

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Warning
If you don't also write the SPI Flash memory, the new bitstream image is lost if the USB FX2 module goes under reset or power off/on cycle.

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Xilinx Spartan-3E FPGA
Xilinx Spartan-3A DSP configuration modes, please consult the documentation listed in chapter 17 Related Materials and References.
Xilinx Spartan-6

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Tip
If the USB FX2 module exit from reset state or is powered on (in the default state of switches), the SPI Flash content program/configure the FPGA.

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