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Fifo user guide pdf SCFIFO and DCFIFO Megafunctions UG-MFNALT FIFO - User Guide Altera provides FIFO functions through the parameterizable single-clock FIFO SCFIFO and dual-clock FIFO DCFIFO megafunctions The FIFO functions are mostly applied in data bu ?

SCFIFO and DCFIFO Megafunctions UG-MFNALT FIFO - User Guide Altera provides FIFO functions through the parameterizable single-clock FIFO SCFIFO and dual-clock FIFO DCFIFO megafunctions The FIFO functions are mostly applied in data bu ?ering applications that comply with the ?rst-in- ?rst-out data ow in synchronous or asynchronous clock domains The speci ?c names of the megafunctions are as follows ? SCFIFO single- clock FIFO ? DCFIFO dual-clock FIFO supports same port widths for input and output data ? DCFIFOMIXEDWIDTHS dual-clock FIFO supports di ?erent port widths for input and output data In this user guide the term ??DCFIFO ? refers to both the DCFIFO and DCFIFOMIXEDWIDTHS megafunctions unless speci ?ed This user guide contains the following sections ? ??Con ?guration Methods ? on page ? ??Speci ?cations ? on page ? ??Parameter Speci ?cations ? on page ? ??Functional Timing Requirements ? on page ? ??Output Status Flags and Latency ? on page ? ??Metastability Protection and Related Options ? on page ? ??Synchronous Clear and Asynchronous Clear E ?ect ? on page ? ??Di ?erent Input and Output Width ? on page ? ??Constraint Settings ? on page ? ??Coding Example for Manual Instantiation ? on page ? ??Design Example ? on page Before you con ?gure and build the FIFO megafunction refer to ??Speci ?cations ? on page and ??Parameter Speci ?cations ? on page The description about input ports output ports and parameters is important especially if you decide to manually instantiate the megafunctions Innovation Drive San Jose CA www altera com ? Altera Corporation All rights reserved ALTERA ARRIA CYCLONE HARDCOPY MAX MEGACORE NIOS QUARTUS and STRATIX words and logos are trademarks of Altera Corporation and registered in the U S Patent and Trademark O ?ce and in other countries All other words and logos identi ?ed as trademarks or service marks are the property of their respective holders as described at www altera com common legal html Altera warrants performance of its semiconductor products to current speci ?cations in accordance with Altera's standard warranty but reserves the right to make changes to any products and services at any time without notice Altera assumes no responsibility or liability arising out of the application or use of any information product or service described herein except as expressly agreed to in writing by Altera Altera customers are advised to obtain the latest version of device speci ?cations before relying on any published information and before placing orders for products or services ISO Registered May Altera Corporation Feedback Subscribe CPage Con ?guration Methods Con ?guration Methods You can con ?gure and build the FIFO megafunctions with the following methods ? Using the FIFO parameter editor launched from the MegaWizard Plug-In Manager in the Quartus II software Altera recommends using this method to build your FIFO megafunctions It is an e ?cient way to con ?gure and build the FIFO megafunctions The FIFO parameter editor provides options that you can easily use to con ?gure the FIFO megafunctions f For