CFR-E3-UT1 Lattice

Peak Cancellation Crest Factor Reduction IP Core Users Guide May 2014 IPUG109 1.1Table of Contents Chapter 1. Introduction .......................................................................................................................... 4 Quick Facts ........................................................................................................................................................... 4 Features ................................................................................................................................................................ 5 Release Information.............................................................................................................................................. 5 Device Support...................................................................................................................................................... 5 Chapter 2. Functional Description ........................................................................................................ 6 Functional overview .............................................................................................................................................. 6 Block Diagram....................................................................................................................................................... 8 Mathematical Model.............................................................................................................................................. 9 Filter Selection .................................................................................................................................................... 10 CFR Performance ............................................................................................................................................... 12 Primary I/O .......................................................................................................................................................... 14 Interface Descriptions ......................................................................................................................................... 18 Data Input/Output....................................................................................................................................... 18 Control Signals and Timing........................................................................................................................ 18 Recommended CFR Coefficients Generation............................................................................................ 19 DSP Utilization Estimation ......................................................................................................................... 20 Chapter 3. Parameter Settings ............................................................................................................ 21 Architecture Tab.................................................................................................................................................. 23 Coefficients Tab .................................................................................................................................................. 24 Others Tab .......................................................................................................................................................... 25 Chapter 4. IP Core Generation............................................................................................................. 27 Licensing the IP Core.......................................................................................................................................... 27 IP Core Generation in IPexpress ........................................................................................................................ 27 Getting Started........................................................................................................................................... 27 Configuring CFR Core in IPexpress........................................................................................................... 28 IPexpress-Created Files and Top Level Directory Structure...................................................................... 30 Instantiating the Core................................................................................................................................. 31 Running Functional Simulation .................................................................................................................. 31 Synthesizing and Implementing the Core in a Top-Level Design .............................................................. 32 Hardware Evaluation.................................................................................................................................. 32 Enabling Hardware Evaluation in Diamond................................................................................................ 32 Updating/Regenerating the IP Core........................................................................................................... 32 IP Core Generation in Clarity Designer............................................................................................................... 33 Getting Started........................................................................................................................................... 33 IP Core Implementation ............................................................................................................................. 38 Hardware Evaluation.................................................................................................................................. 39 Enabling Hardware Evaluation in Diamond................................................................................................ 39 Regenerating an IP Core in Clarity Designer Tool..................................................................................... 39 Recreating an IP Core in Clarity Designer Tool ......................................................................................... 40 Chapter 5. Support Resources ............................................................................................................ 41 Lattice Technical Support.................................................................................................................................... 41 E-mail Support ........................................................................................................................................... 41 Local Support............................................................................................................................................. 41 Internet....................................................................................................................................................... 41 IEEE........................................................................................................................................................... 41 References.......................................................................................................................................................... 41 LatticeECP3 ............................................................................................................................................... 41 ECP5.......................................................................................................................................................... 41 2014 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal. All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice. IPUG109 1.1, May 2014 2 Peak Cancellation Crest Factor Reduction IP Core Users Guide