[USRP-users] DDC's Filters in B210

altuğ kaya altugkaya1996 at gmail.com
Wed Jul 19 05:52:00 EDT 2017


Dear Martin,

So, CIC's status is a binary one. For example if the ratio is 3, 3%4 = 3
and because there is a remainder, the CIC is enabled. If the ratio is 20,
both half-bands will be enabled and CIC is disabled as 20%4 = 0. Did I
understand correctly?

Regards,
Altug

On Tue, Jul 18, 2017 at 5:59 PM, Martin Braun via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Altuğ,
>
> per channel, there's 2 half-bands and 1 CIC. The rule is: We try and
> enable as many half-bands as possible, the rest is done by CIC. So, any
> ratio of sample_rate to master_clock_rate that is divisible by 4 has 2
> half-bands, any other even ratio has 1 half-band, and the remainder is
> done in the CIC.
>
> Cheers,
> Martin
>
> On 07/18/2017 07:55 AM, altuğ kaya via USRP-users wrote:
> > Hello everyone,
> >
> > In B210 there are 2 half-band filters and 4 CIC filters. As far as I
> > know we can select how many filters we would like to use by tuning the
> > ratio between sample_rate and master_clock_rate. What is the rule of it?
> >
> > I am looking forward to your answer,
> > Altug Kaya
> >
> >
> > _______________________________________________
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> > USRP-users at lists.ettus.com
> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
> >
>
>
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