This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/UmTRX@lists.osmocom.org/.
Alexander Chemeris alexander.chemeris at gmail.comSrdjan, Ok, I see now. Thanks for the explanation! I have a couple more questions about the values for the chip init sequence we use - in the next e-mail. On Tue, Sep 25, 2012 at 6:41 AM, Srdjan Milenkovic <s.milenkovic at limemicro.com> wrote: > Alexander, > > VCOREG is in fact on chip LDO which takes 3.3V and generates 1.8V for VCOs > supply. However, we do not recommend internal VCO 1.8V regulators to be used > as they are more noisy than the external ones. Hence, by default internal > regulators are powered down and bypassed so clean external 1.8V can be > supplied via the chip pins. > > > On 25/09/2012 05:19, Alexander Chemeris wrote: >> >> Hi guys, >> >> Could anyone tell me, the software guy, what may be the purpose of >> VCOREG block in LMS6002D (Figure 3.4 at the Programming Guide)? In our >> current code it's always powered down and not used, and I just wonder >> whether it could be used for frequency hopping and what are other >> potential uses. If I understand correctly, it's a kind of fine tuning >> for the PLL output frequency. >> > > -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru