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New ContributorDAC Interface Instability After Migrating from MAX7000 to MAX10
Hi all,
In one of our legacy designs, we used the MAX7000 (EPM7128AETC100-10N) CPLD. Due to obsolescence, we updated the design to use the MAX10 (10M04SCE144C8G).
After the migration, we are observing instability in the DAC interface during operation.
Has anyone encountered similar behavior when moving from MAX7000 to MAX10? Are there any known circuit-level differences, I/O characteristics, or design considerations we should account for to ensure stable DAC communication?
If we made some correction on RC filter its working, reason is root cause is needed for implementation.
Any guidance or insights would be greatly appreciated.
Thanks
Niranjan. D
5 Replies
Farabi_AlteraRegular Contributor
Hello,
Could you please share your setup, what has changed etc.
We need to know the IO voltage standard and power.
regards,
Farabi
niranjandevarajanHi Farabi,
Thanks for response
I have attached modified new setup with MAX10 and old working setup with MAX7000 images.
Old MAX7000 Schematic
Regards
Niranjan
AqidAyman_AlteraHi Niranjan,
As per my knowledge, our device does not have a DAC architecture, so there is no way for me to check this.
MAX 10 only have the ADC architecture. Refer below:
Regards,
Aqid
FvMSuper Contributor
HI Niranjan,
looking at the schematics in your latest post, it's neither clear which signals belong to DAC interface nor which kind of interface (e.g. serial, parallel) is implemented at all.
Please clarify.
Regards
Frank
