User Macro Guide

Speedster Macro Cell Library www.achronix.com PAGE xiv
Preface
Introduction
The Achronix Macro Cell Library provides the user with building blocks that may be
instantiatedintotheuser’sdesign.Thesemacrosprovide accesstolow‐levelfabricprimitives,
complexI/Oblock,andhigherleveldesigncomponents.Eachlibraryelemententrydescribes
the operation of the macro as well as any parameters
 that must be initialized. Verilog and 
VHDLtemplatesarealsoprovidedtoaideintheimplementationoftheuser’sdesign.
TheSpeedsterMacroCellLibraryisdividedintonineseparatechapters:
• Chapter1–“I/OCells”
• Chapter2–“Registers”
• Chapter3–“LogicFunctions”
• Chapter4–“LookupTable(LUT)Functions”
• Chapter5–“Arithmetic Functions”
• Chapter6–“Memories”
• Chapter7–“Multipliers”
• Chapter8–“SpecialFunctions”
• Chapter9–“PLL/DLLClockGenerators”