[Libre-soc-dev] Unexpected clock connexions.
Luke Kenneth Casson Leighton
lkcl at lkcl.net
Thu Jun 3 14:44:03 BST 2021
---
crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Thu, Jun 3, 2021 at 2:33 PM Jean-Paul Chaput <Jean-Paul.Chaput at lip6.fr>
wrote:
>
> Ha. You may have got a wrong impression about clock tree & H-Tree due
> to a trick I used to cut corners.
>
probably :)
>
> For the clock signals, do I read correctly that some components with
> run at *external* clock speed (DEBUG & DMI) ?
NO. Debug-DMI and JTAG run at the *PLL* clock.
but they **GENERATE** the RESET signal that is used by the REST of
TestIssuer.
hence why i asked if the debug reset out should be an H-Tree (of some kind)
i will draw it as a diagram.
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