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Altera_Forum
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16 years ago

JTAG configuration error in CycloneIII

Hi The last week I wrote a post about a problem with the configuration of the EP3C5E144C8N cycloneIII FPGA: ------------- I´m trying to program a EP3C5E144C8N FPGA in JTAG mode using a ByteBla...
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Altera_Forum
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14 years ago

Please help me for my design,

I made a prototype using your same device[EP3C5E144C8N]. I designed the circuit in JTAG configuration only. But I am using the Terasic USB Blaster download cable and Byte Blaster MV. In this case no response from the target board. My design has as per the Altera documents.

But Terasic documents said that, It is only for Cyclone I and cyclone II family of devices in the altera cyclone series. I have doubt in the JTAG voltage levels, they are VCCIO and VCCA.

Is it more difference between cyclone II and cyclone III. But I have successfully programmed the cyclone II family device using USB Blaster and as well as Byte Blaster..,

can I set 3.3v for the VCCA line. But mostly preferred this level is 2.5 V.

I have more confusion in this area.

do I change the download cable design for that?

If it changes that please tell me?

Can I give same voltage rating for VCCIO and VCCA?

The 6th pin on JTAG connector is VCCIO but the blaster line is tell it for nCE? what I do?

please show me your design in that particular area?

Is it possible to program the cyclone III family device in normal download cable(Terasic USB Blaster or Byte blasterMV)