[sdiy] 4046 VCO overclocking a PIC

Richie Burnett rburnett at richieburnett.co.uk
Fri Aug 28 22:55:17 CEST 2015

Tom, are the pics with PLL clock multiplication happy with the input frequency going right down to DC?  I know the VCO in  the Dspic's PLL has quite a small locking range. Like just one octave if I remember correctly :-(

You told me about a pic with an NCO module built in once. Have you done any experiments with that?


Sent from my Xperia SP on O2

---- Tom Wiltshire wrote ----

>On 28 Aug 2015, at 20:39, Jim Credland <jim at cernproductions.com> wrote:
>> On 28 Aug 2015, at 20:38, Tom Wiltshire <tom at electricdruid.net> wrote:
>>> Yeah, I think under-clocking might be the way to go too. (I love the idea of running it down to DC, stopping it, and then starting it up again. Clocking a PIC with a LFO, anyone?!)
>> Have you tried the Z-DSP from TipTop?  It lets you externally clock the FV-1 DSP using a socket on the front.  It's a lot of amusement if not quite music much of the time ;_)
>That does sound entertaining!  It's like DSP…only…..mu..ch…..s…l….o…w…e…r..!..!
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