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Altera_Forum
Honored Contributor
14 years agoCascading CPLDs on different PCBs
I'm designing a basic harness continuity checker based on shift registers implemented in Max V CPLDs. I'm aiming for a modular/extendable PCB design for the project as it has several benefits (cost, ...
Altera_Forum
Honored Contributor
14 years agoBefore you get too far along on the path of using CPLDs for each of your shift-registers, have you considered using actual shift-registers?
You could use a single CPLD to access multiple banks of shift-registers. Rather than cascading CPLD boards, you cascade the boards containing shift-registers. I like using CPLDs (since you can add features), but if you're worried about cost, perhaps using a CPLD to interface to shift-registers should be considered. Cheers, Dave