3
IGLOO nano Starter Kit Quickstart Card
Running the Pre-Programmed Design
Plug the USB cable into a powered USB hub or a powered PC. Plug the USB cable into the board to
power it up. The board is powered from the USB connection and no external supply is required. On
power-up, LED 9 indicates power, but the design is in reset. Push SW1 to activate the design and
run it as indicated in the table below.
Flash*Freeze Mode and Power Measurement
Use the Flash*Freeze Switch (SW6 F*F) to control Flash*Freeze mode. To enable Flash*Freeze
mode, slide SW6 toward FF_ON; and to disable Flash*Freeze mode, slide SW6 toward FF_OFF.
Flash*Freeze technology enables you to quickly (within 1 μs) enter and exit Flash*Freeze mode by
activating the Flash*Freeze pin while all power supplies are kept at their original values. I/Os, global
I/Os, and clocks can still be driven and can be toggling without impact on power consumption;
while the device retains all core registers, SRAM information, and I/O states.
Running the Flash*Freeze Demo
Press SW2 or SW3 to run the LEDs in either Right Shift or Left Shift mode. Use SW6 to activate
Flash*Freeze mode. The FPGA will appear to be powered off and the LEDs will be off. When
Flash*Freeze is released, the sequence will restart from the same position, showing that register and
I/O state are retained.
USB-UART Testing
For details on setting up and using the included UART, refer to the
IGLOO nano Starter Kit User's
Guide
.
Push Button
LED
DIP Switch
SW1
All 8 LEDs blinking
Don't care
SW2
Right Shift (LED1 to LED8)
Don't care
SW3
Left Shift (LED8 to LED1)
Don't care
SW4
LED on or off depending on DIP
switch positions SW5.[1:8]
DIP switches control respective
LEDs
SW7 (Reset)
All 8 LEDs will be off
Don't care
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