Do u need a vhdl code or concept for the implementation?

Hi,

You need to check some basic papers related to this field. They are http://teal.gmu.edu/courses/ECE645/projects_S06/talks/CORDIC.pdf, http://zatto.free.fr/manual/Volder_CORDIC.pdf (citations 2230). I had studied architectural design of IC back in 2012 fall during my MS course work and found this segment (CORDIC) very interesting. You first study the theory portions, understand the working principle and architecture. Once you are done with architecture, you can go ahead with verilog/VHDL for implementing the same. I think this helps you.

Good Luck.

Satyabrata

Depending on the accuracy you need, you might want to use table lookup with interpolation.  It is much faster as only one or two fixed point arithmetic operations are needed.  Rotate into a quadrant to reduce table size, and extract a number of bits from the argument corresponding to your table size for immediate lookup. 

Hi, you can check my implementation of a universal, multi-mode, CORDIC machine in synthesizable RTL VHDL. It comes with reference C code and a number of tests.

http://opencores.org/project,kvcordic

I am sure that this can be parameterized for the new VHDL-2008 fixed-point data types with reasonable effort.

Hi

the descreption of algorithm Cordic implemented by the logic element as Adder and substractor divice.

 http://airccj.org/CSCP/vol2/csit2243.pdf 

this file for the shifting regiter 

Thx very muck for all the answers.

@Aneesh Raveendran: I need a vhdl code for sinus generation with cordic

@ Satyabrata Sarangi: the link is not working. perhaps only in germany

@Robert Shuler: Thank u i did it with a look up tabel it works but i need to do it with cordic to.

the first step that I need now is to calc the Pase of an angle, so i need a vhdl code which help me to calc any Pase

example sin(90)=___

the VHDL program should just calculate that with the CORDIC Algorithmus...

Thx alot

what problem are you actually facing in this ?

http://www.eetimes.com/document.asp?doc_id=1279635

here a vhdl code for cordic is given.

as far as I understand this code, it says (2^16) -1=1 radian =57. 2958 degrees so we can calculate codes up to 57.2958 degree.

anyone knows how we can get values for another angle or I am understanding this code totally wrong.

to Vinod Kumar:

The algorithm in the code shown seems to be fine. It has fixed number of iterations - 15. The angles given in a table (see tan_array) range from 0.25*pi to ~(10^-5)*pi covering the total area of more than pi/2. This allows you to find any angle from the cordic input range (if no preprocessors are used) with ~0,002 deg maximum accuracy.

You might want to checkout kvcordic, my implementation of a multi-mode, universal, CORDIC. There is documentation, software implementation of the algorithm plus VHDL hardware description. You can download it from either: http://github.com/nkkav/kvcordic or http://opencores.org/project,kvcordic . The Github repository is always up-to-date. I use fixed-point arithmetic with a Q2.14 representation. Both the C and VHDL testbenches showcase function approximation as for sine, cosine, atan, sqrt, etc.

you can visit this links. 

http://www.alicavuslu.gen.tr/2014/12/23/vhdl-ile-cordic-tasarimi/

http://www.alicavuslu.gen.tr/2015/02/05/vhdl-ile-cordic-rec2pol-tasarimi/

http://www.instructables.com/id/Cordic-Algorithm-Using-VHDL/

https://en.wikiversity.org/wiki/CORDIC_Hardware_Implementations

It, mostly, depends of vendor, most of them have different IP-cores for that. If you use Altera (now Intel FPGA), they have NCO IP core. You can generate sin signal with it. If you want to calculate sin from some input value, then you can choose CORDIC IP-core, wich appeared in Quartus 16.0

can anyone please help me with matlab code for sine wave generation using cordic!!?? i have seen people doing it in VHDL.. if there any code in matlab please send me.. Atleast the pseudo code.

Dear Yuvarani Divakaramoorthy, please, use google for it

http://bfy.tw/JLoQ

Matlab has it's own examples like this: https://www.mathworks.com/help/fixedpoint/ref/cordicsin.html

Daniil Smirnov yes i saw this code..but i need to know what is written inside the cordicsin function..and also whether when we generate a sine wave it will start only from 0 or from some other amplitude?