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Altera_Forum's avatar
Altera_Forum
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18 years ago

Cyclone III Starter Kit Control Panel

I am curious as to how the control panel actually works. It seems to require the FPGA be reconfigured to work. How does the host machine exchange data with the FPGA to do things like turn on/off LEDs...
Altera_Forum's avatar
Altera_Forum
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18 years ago

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...but has no other option than routing data through virtual JTAG hub, using the respective protocol.

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They don't use the dedicated JTAG pins. They used standard I/O pins, named the same as the JTAG ones, and connected to other signals at the USB Blaster MAX CPLD. They definitely don't use the virtual jtag hub and protocol.

This seems to be changed in the DE2-70. The latter does use the hub.