[J-core] Pondering j-core kickstarter ideas.
chrisfriedt at gmail.com
Tue Apr 26 19:22:32 EDT 2016
On Tue, Apr 26, 2016 at 7:00 PM, Rob Landley <rob at landley.net> wrote:
> No I am talking about a potential asic, I think I didn't understand
> _your_ question. On-chip clocks and timers to do... what? (High accuracy
Well, that's one use, of course (e.g. cycle or performance counter).
One other example that immediately comes to mind is the systick on
cortex-m. Another example would be periodic timers (countdown timers)
that fire interrupts. On the last stm32 cortex-m device I was playing
with, there were something insane like 8 periodic timers!
> What I was trying to explain is that I don't know how to add more
> on-chip clocks and timers in VHDL, because it's the "how do I add a
It's pretty simple - for the most part it's just a matter of
downsampling the clock signal from the high speed crystal. Usually
those clock signals are programmable with a ratio in order to allow
for a number of different crystal frequencies and downscaling ratios.
More information about the J-core