Xilinx, Inc.

Muhammad Asim Rab

James M Simkins

Vasisht Mantra Vadi

Alvin Y Ching

John M Thendean

Chi Fung Poon

A digital signal processing block with a preadder stage for an integrated circuit is described. The digital signal processing block includes a preadder stage and a control bus. The control bus is coupled to the preadder stage for dynamically controlling operation of the preadder stage. The preadder stage includes: a first input port of a first multiplexer coupled to the control bus; a second input port of a first logic gate coupled to the control bus; a third input port of a second logic gate coupled to the control bus; and a fourth input port of an adder/subtractor coupled to the control bus.

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Campbell, CA, United States of America

Muhammad Asim Rab