Álvaro Lopes wrote: > Werner Almesberger wrote: > >> Dave Ball wrote: >> >>> I've just implemented this with the NTDG1100L (new part, so the symbol >>> could do with a review too), >>> >> - Why not reuse the SI1040X ? They're virtually identical. >> > > I asked myself the same question. > > But I guess Dave has a good answer for it. Actually I assumed you had > discussed that on IRC. It's a new part, and might be hard to source (ie, not > in stock for the first prototypes). >
Unfortunately, I don't have a good answer :-) I was away for a few days, but thought Werner / Rask had identified the NTDG1100L as the prefered solution: http://n2.nabble.com/Modem-schematic-RF-help-needed-tp3591236p3624034.html http://n2.nabble.com/Modem-schematic-RF-help-needed-tp3591236p3628602.html I wasn't aware of the SI1040X, so I'm happy to look into using that instead - makes sense to avoid new components if we can. > And I'd really prefer enabling that using a longer delay line (ie, CPU > output). That would have other benefits too, like lower consumption at power > up. > I'll admit to not knowing the PMU details, but can't we just delay the 2v8 output until we need to power on the modem? I couldn't see an advantage of having one powered up earlier than the other? All the best, Dave _______________________________________________ gta02-core mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/gta02-core
