The CORDIC IP implements a generalized coordinate rotational digital computer (CORDIC) algorithm, initially developed by Volder to iteratively solve trigonometric equations, and later generalized by Walther to solve a broader range of equations, including the hyperbolic and square root equations. The CORDIC IP implements the following equation types:
- Rectangular <-> Polar Conversion
- Trigonometric
- Hyperbolic
- Square Root
Key features are:
- Supports AXI4-stream interface
- Delivers VHDL demonstration testbench with CORE Generator
- Supports many functional configurations: vector rotation (polar to rectangular), vector translation (rectangular to polar), Sin and Cos, Sinh and Cosh, Atan and Atanh, Square Root
- Supports inputs and outputs ranging from 8 to 48 bits wide
- Provides control of the internal add-sub precision and the number of add-sub iterations
- Optional amplitude compensation for CORDIC algorithm’s amplitude scale factor
- Supports multiple output rounding modes: Truncation, Round to Pos Infinity, Round to Pos/Neg Infinity and Round to Nearest Even
- Word Serial architectural configuration for small area and parallel architectural configuration for high throughput
- Instantaneous Resource Estimation
- For use with Xilinx CORE Generator™ and Xilinx System Generator
Documentation
The COTS version v5.0 is the baseline from which the DO-254 Cordic 1.00a comes from. Logicircuit applies the DO-254 lifecycle to this COTS version. As a result of this DO-254 process, the source code will be modified with the goal of achieving 100% code coverage, and the resulting code will be named DO-254 Cordic 1.00a. Below are links to the Xilinx® Product Data for the version that was used as the basis, and the Logicircuit Data Sheet of the resulting DO-254 product.
Link to the Xilinx® Product Specification:
http://www.xilinx.com/support/documentation/ip_documentation/cordic/v5_0/ds858_cordic.pdf
Link to the Logicircuit Data Sheet:
DO-254 Cordic 1.00a Data Sheet
Device Family Support
Xilinx® Artix™-7
Xilinx® Kintex™-7
Xilinx® Virtex™-7
Xilinx® Zynq™-7000
Xilinx® Spartan®-6
