> Andrew Lunn > Sent: Tuesday, June 17, 2008 10:20 AM > To: Davies, Greg > Cc: ecos discuss > Subject: Re: [ECOS] Changing PLL register was: Configuration > for at91sam7se-ek > > The cause of all of it was that there was no PLL filter. > Im not really a HW engineer, so maybe this is a dumb question... Neither am I, not by a long shot...
> The Atmel document doc6112.pdf, which is the reference design > of the AT91SAM7S, where you missing the two capaciters to > ground on either side of the crystal? Or the > resister/capacitor network to PLLRC? I guess the second? It is the second. The electrical guy thought we were running straight off the crystal, and I typically stop reading when the documentation gets into hardware stuff, and the problem fit so nicely into that disconnect. It also didn't help that it worked really well for a while, and then stopped after a software change. -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
