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CLK15_6P Cyclone III Device Handbook
Prototype PCB
Part No.:   CLK15_6P
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Description:   Cyclone III Device Handbook
File Size :   7302 K    
Page : 274 Pages
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Maker   ALTERA [ ALTERA CORPORATION ]http://www.altera.com
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8. External Memory Interfaces in the
Cyclone III Device Family
July 2012
CIII51009-3.1
CIII51009-3.1
In addition to an abundant supply of on-chip memory, Cyclone
®
III device family
(Cyclone III and Cyclone III LS devices) can easily interface to a broad range of
external memory, including DDR2 SDRAM, DDR SDRAM, and QDRII SRAM.
External memory devices are an important system component of a wide range of
image processing, storage, communications, and general embedded applications.
1
Altera
®
recommends that you construct all DDR2 or DDR SDRAM external memory
interfaces using the Altera ALTMEMPHY megafunction. You can implement the
controller function using the Altera DDR2 or DDR SDRAM memory controllers,
third-party controllers, or a custom controller for unique application needs.
Cyclone III device family supports QDR II interfaces electrically, but Altera does not
supply controller or physical layer (PHY) megafunctions for QDR II interfaces.
This chapter includes a description of the hardware interfaces for external memory
interfaces available in Cyclone III device family.
This chapter contains the following sections:
f
For more information about external memory system performance specifications,
board design guidelines, timing analysis, simulation, and debugging information,
refer to the
page.
© 2012 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 Office and in other countries. All other words and logos identified as
trademarks or service marks are the property of their respective holders as described at
Altera warrants performance of its
semiconductor products to current specifications 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 specifications before relying
on any published information and before placing orders for products or services.
Cyclone III Device Handbook
Volume 1
July 2012
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