On Sat, Apr 25, 2009 at 5:12 AM, John Watlington <w...@laptop.org> wrote:
> > This is the current power distribution diagram for A-phase CL1B, > identifying > what we can power, when, and how. > > There are several power decisions that I believe need explaining up front: > > - The SD slot and USB ports may be powered in suspend > This is "just in case" some SD cards or USB devices don't handle being > suspended > aggressively. We will support laptop wakeup on interrupt from any > of these ports (SD or USB). Under software control they may also be > powered > down during suspend. > > - The audio codec remains partially powered in suspend > This is in order to support "wakeup on jack insertion". The codec > may be placed in a very low power state during suspend. Sorry to ask, but is "wakeup on jack insertion" relevant for someting? Also, on Gen1 I can still hear noise coming from the speakers when they're muted, some current seems to still go through there. Has anyone ever found out how much? Best regards, Tiago Marques > > > - Power efficiency was goal number #1, therefore there are some voltages > with > multiple sources: one for low power (suspend) and another for high power > (run). > > Additional changes from Gen 1 include the ability to both measure DC input > current > and VIN voltage, as well as EC control over the current drawn from the DC > input. > The intent was to better support charging directly from solar panels. > > I'm sure there are mistakes --- let me know what you think. > > Cheers, > wad > > > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel > >
_______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel