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Digit-pipelined direct digital frequency synthesis based on differential CORDIC

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2 Author(s)
Chang Yong Kang ; Intel Corp., Chandler, AZ, USA ; Swartzlander, E.E.

A novel direct digital frequency synthesis (DDFS) architecture based on the differential CORDIC (DCORDIC) algorithm is presented. The architecture allows digit-level pipelining in the CORDIC angle path by implementing a two-dimensional systolic array. Unlike other DDFS architectures, it incorporates the phase accumulator in the digit-level pipelining framework so that a bottleneck-free datapath throughout the whole system is achieved in a scalable manner. A generic environment that generates fully synthesizable Verilog codes that implement the proposed architecture is created and the physical attributes of the resulting system are discussed.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:53 ,  Issue: 5 )