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clk sync JTAG and Debug module #161

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ohadbox opened this issue Aug 24, 2020 · 0 comments
Open

clk sync JTAG and Debug module #161

ohadbox opened this issue Aug 24, 2020 · 0 comments

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@ohadbox
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ohadbox commented Aug 24, 2020

Hey,

I'm working on an Unleashed configuration of Freedom and having an issue with clk syncing in the design:

  1. Top level generates JTAG inputs and clk.
  2. There's a Debug module (DM) conversion.
  3. In DM, some of the signals are synced to system clk (sys_clk).
  4. Most signals go straight to core which is also under sys_clk.
  5. There's in output named "ndmreset" going to core (via OR gate). But this signal isn't synced to sys_clk and is still under jtag_clk freq.

Is there something I'm missing?
Shouldn't there be a sync to sys_clk on this signal as well?

Thanks!

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