[Libre-soc-bugs] [Bug 507] ls180 asic needs an ioring, pads need defining and connecting

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Fri Oct 2 10:04:41 BST 2020


--- Comment #10 from Jean-Paul.Chaput at lip6.fr ---
(In reply to Luke Kenneth Casson Leighton from comment #9)
> (In reply to Luke Kenneth Casson Leighton from comment #8)
> > hm i must make a dummy PLL for you with an input of "sys_clk" and an output
> > "internal_pll_clk" i will do that before afternoon.
> this is now done, it is:
> * sys_clk input from ioring thru corona
> * sys_clk connects to "dummy" PLL
> * pll_out connects to clksel module
> * clksel outputs "core" (internal) clock
> * core clock drives most of ls180

If not already done, could you make a "trimmed down" core version so the outer
interface (to the CORONA / I/O pads) is the same, but with a much smaller core
so I can speed up my debug cycle?

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