FPGA, SoC, And CPLD Boards And Kits
FPGA Evaluation and Development Kits
Announcements
Intel Support hours are Monday-Fridays, 8am-5pm PST, except Holidays. Thanks to our community members who provide support during our down time or before we get to your questions. We appreciate you!

Need Forum Guidance? Click here
Search our FPGA Knowledge Articles here.
5157 Discussions

CycloneIII 3c120 does not load through USB

Altera_Forum
Honored Contributor II
806 Views

Hi 

 

I have just received a CycloneIII 3c120 Dev kit. When I try to load a configuration (*.sof) through USB Blaster, Quartus II gives the following messages: 

 

Info: Started Programmer operation at Tue Aug 23 15:18:56 2011 

Error: Can't access JTAG chain 

Error: Operation failed 

Info: Ended Programmer operation at Tue Aug 23 15:18:57 2011 

 

All switches are according to the documentation. But I can't load any design 

 

Help much appreciated
0 Kudos
1 Reply
Altera_Forum
Honored Contributor II
89 Views

Hello 

 

After experimenting and looking at the different documents, I changed the SW3.4 to 0 and then could program the device. In the "User Guide", the information tells SW3.4 on, in the "Reference Manual" it tells, that SW3.4 should be off. (Max-enable off). 

 

So, it seems, that the problem is solved. But the documentation is not clear. 

 

Am I wrong?
Reply