NCO IP Core: User Guide

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ID 683406
Date 11/06/2017
Public

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Document Table of Contents
Document Table of Contents x
1. About the NCO IP Core 2. NCO IP Core Getting Started 3. NCO IP Core Functional Description A. NCO IP Core User Guide Document Archives 4. Document Revision History
1. About the NCO IP Core x
1.1. Intel® DSP IP Core Features 1.2. NCO IP Core Features 1.3. DSP IP Core Device Family Support 1.4. NCO IP Core MegaCore Verification 1.5. NCO IP Core Release Information 1.6. NCO IP Core Performance and Resource Utilization
2. NCO IP Core Getting Started x
2.1. Installing and Licensing Intel® FPGA IP Cores 2.2. IP Catalog and Parameter Editor 2.3. Generating IP Cores ( Intel® Quartus® Prime Pro Edition) 2.4. Simulating Intel® FPGA IP Cores
2.1. Installing and Licensing Intel® FPGA IP Cores x
2.1.1. Intel® FPGA IP Evaluation Mode 2.1.2. NCO IP Core Intel® FPGA IP Evaluation Mode Timeout Behavior
2.3. Generating IP Cores ( Intel® Quartus® Prime Pro Edition) x
2.3.1. IP Core Generation Output ( Intel® Quartus® Prime Pro Edition)
3. NCO IP Core Functional Description x
3.1. NCO IP Core Architectures 3.2. Multichannel NCOs 3.3. Frequency Hopping 3.4. Phase Dithering 3.5. Frequency Modulation 3.6. Phase Modulation 3.7. NCO IP Core Parameters 3.8. NCO IP Core Interfaces and Signals
3.1. NCO IP Core Architectures x
3.1.1. Large ROM Architecture 3.1.2. Small ROM Architecture 3.1.3. CORDIC Architecture 3.1.4. Multiplier-Based Architecture
3.7. NCO IP Core Parameters x
3.7.1. Architecture Parameters 3.7.2. Frequency Parameters 3.7.3. Optional Ports Parameters
3.8. NCO IP Core Interfaces and Signals x
3.8.1. Avalon-ST Interfaces in DSP IP Cores 3.8.2. NCO IP Core Signals 3.8.3. NCO IP Core Timing Diagrams
1. About the NCO IP Core
2. NCO IP Core Getting Started
3. NCO IP Core Functional Description
A. NCO IP Core User Guide Document Archives
4. Document Revision History

3.1.1. Large ROM Architecture

Use the large ROM architecture if your design requires very high speed sinusoidal waveforms and your design can use large quantities of internal memory.

In this architecture, the ROM stores the full 360 degrees of both the sine and cosine waveforms. The output of the phase accumulator addresses the ROM.

The internal memory holds all possible output values for a given angular and magnitude precision. The generated waveform has the highest spectral purity for that parameter set (assuming no dithering). The large ROM architecture also uses the fewest logic elements (LEs) for a given set of precision parameters.

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