Abstract
A chip implementing the coordinate rotation digital computer (CORDIC) algorithm is described. It contains a 10-MHz 16-b fixed-point CORDIC arithmetic unit, 2-kb RAM, a controller, and input/output (I/O) registers. A modified data-path architecture allows cross-wire free data flow. The chip design involved development of optimized carry-select adders and a modified programmable-logic-array (PLA) cell layout, which allows speed increase in single-layer metal technology. The authors designed, fabricated, and tested a general-purpose fully parallel programmable CORDIC chip in CMOS technology and developed optimal iteration sequences. >
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