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johny7401's avatar
johny7401
Icon for New Contributor rankNew Contributor
5 years ago

MAX10 "JTAG_Lock_Unlock"

I have unintentionally LOCK a chip 10M25DAF256C8G due to JTAG secure option and wrong key in POF file. In Intel site I have download "JTAG Lock Unlock" project to unlock my chip, but I can NOT conf...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi Johny,


Once the secure mode is LOCKED, the only way is to UNLOCK it using the internal JTAG block so that the JTAG can be used again. It can be seen from the design attached previously.


For your scenario, i am afraid that it cannot be programmed with JTAG anymore. The only method is the remove the flash, program it with the encrypted bitstream with internal JTAG block IP in the design.


Thank You.


johny7401's avatar
johny7401
Icon for New Contributor rankNew Contributor
5 years ago

Hi YuanLi_SIntel,

As far as I know the only way to implement sof or pof files into MAX10 is JTAG. I have compiled the project ("JTAG_LOCK_UNLOCK"). I can make the encrypted bitstrim pof-file. So I still can not realize how can I implement into chip my pof-file by help of internal JTAG in such way? And what do you mean writing REMOVE THE FLASH? Excuse me for my importunity, can you explain me more detailed?