OPENCORES.ORG

Thanks richard, I have that download and now its clear.
-Hemanth

>
> Oy, long time ago ....
> The particular cordic algorithm you're talking about converges only for
> input values in the range -0.5pi to +0.5pi.
> To use the full 2pi range you need to mangle the input and output values.
> There is a version available that does exactly this. It's included in the
> tarball as well ...
>
> The range of the results (i.e. the number of valid bits) depends on the
> depth of the pipeline. Larger pipeline, larger dynamic range.
> Keep in mind that you need to adjust the output value (the K-factor). The
> amount you need to adjust it by is, again, dependant on how deep the
> pipeline is.
>
> Hope this answers the question.
>
>
> Cheers,
> Richard
>
>> -----Original Message-----
>> From: cores-bounces@o...
>> [mailto:cores-bounces@o...] On Behalf Of hemanths@d...
>> Sent: Thursday, February 17, 2005 1:03 PM
>> To: Discussion list about free open source IP cores
>> Subject: RE: [oc] I2C test bench timing violations?
>>
>> Richard,
>> I was trying to use the cordic transformer available in OC
>> which has been developed by you. I was reading the pdf
>> dcoument in it. there for the rectangular to polar conversion
>> block you mention the outputs as begin "16 bit  integer and 4
>> bit fractional".
>> Does this apply to both the Rout and Aout??
>> If I want the Aout to be b/w -pi to pi in 2's complement
>> form, can I just use the given Aout as it is or do I have to
>> modify the format??
>> I appreciate any help for the above two questions.
>>
>> thanks,
>> Hemanth
>>
>>
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