Vendor: Lattice Semiconductor Corp. Category: Arithmetic Units

CORDIC

CORDIC (COordinate Rotation DIgital Computer) is a simple and efficient algorithm to calculate hyperbolic and trigonometric funct…

Overview

CORDIC (COordinate Rotation DIgital Computer) is a simple and efficient algorithm to calculate hyperbolic and trigonometric functions and convert polar co-ordinates to artesian and vice versa. It is an iterative method that requires simple arithmetic operations such as addition, subtraction, bit shift and table look up. This frees up any available multipliers in the device for use in more complex tasks.

The Lattice CORDIC IP is configurable and several functions can be implemented in the IP core: Rotation, Translation, Sin and Cos, Arctan. Two architecture configurations are available for the arithmetic unit: Parallel, with single cycle data throughput, and Word-serial, with multiple cycles throughput. The input data, output data widths and iterative number are configurable over a wide range. The IP core uses full internal precision while allowing variable output precision with several choices for rounding.

Key features

  • Functions supported:
    • Vector rotation (polar to rectangular)
    • Vector translation (rectangular to polar)
    • Sin and cos
    • Arctan
  • Input data widths from 8 to 32 bits
  • Configurable number of iterations used to derive output from 4 to 32
  • Optional pre-rotation module
  • Optional amplitude compensation scaling module to compensate for the CORDIC algorithm’s output amplitude scale factor
  • Selectable rounding algorithm: truncation, rounding up, rounding away from zero, convergent rounding
  • Selectable parallel architectural configuration for throughput optimization
  • Selectable word-serial architectural configuration for area optimization
  • Signed 2’s complement data
  • Optional clock enable (ce) and synchronous reset (sr) control signals
  • Full precision internal arithmetic

Block Diagram

CORDIC block diagram

Specifications

Identity

Part Number
CORDIC
Vendor
Lattice Semiconductor Corp.
Type
Silicon IP

Files

Product Sheet Download

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Provider

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Frequently asked questions about Arithmetic Unit IP cores

What is CORDIC?

CORDIC is a Arithmetic Units IP core from Lattice Semiconductor Corp. listed on Semi IP Hub.

How should engineers evaluate this Arithmetic Units?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Arithmetic Units IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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