JTAG ID not consistent with FPGA reference

Question

Hi,I have a board mounted with a cyclone III, the reference of the FPGA on the package is EP3C40 (see picture).When I try to program the FPGA via JTAG, I have the following error :Error (209015): Can't configure device. Expected JTAG ID code 0x020F40DD for device 1, but found JTAG ID code 0x020F60DD.The expected JTAG ID is the ID of the EP3C40 (0x020F40DD) and the ID read is the ID of EP3C80 (0x020F60DD).(ID reference found in Cyclone III Device Handbook, Table 12–2. Device IDCODE for Cyclone III Device Family)Where can this error come from? Is there the wrong matrix in the package? Is my FPGA damaged?Thanks

sar · Answer

1. Can you share the quartus message log with .qpf?

2. Are you using Dev kit?

3. Check the jtag signals and check tck signal.

Are you able to program epcs flash device?

Refer previous thread https://forums.intel.com/s/question/0D50P00003yyMv7SAE/problems-with-jtag-code?language=en_US

jlabr1 · Answer

1. The message is the following :Error (209015): Can't configure device. Expected JTAG ID code 0x020F40DD for device 1, but found JTAG ID code 0x020F60DD.Error (209012): Operation failed2.  It is a custom board. It is not a prototype, this design is used to produce boards since few years3. I haven't checked the jtag signals but it is strange that only one bit is wrong.EPCS flash device is programmed via USB blaster in active serial programming not via JTAG

sar · Answer

Hi,Since  FPGA works fine with epcs in AS mode. Issues may be due to TCK clock or frequency issue.Also check MSEL, I know msel is not considered in JTAG mode.have you followed all recommendation from below links.https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone3/pcg-01003.pdfpage 50 https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyc3/cyc3_ciii51016.pdf

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JTAG ID not consistent with FPGA reference

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