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CLK11_4P Cyclone III Device Handbook
Prototype PCB
Part No.:   CLK11_4P
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Description:   Cyclone III Device Handbook
File Size :   7302 K    
Page : 274 Pages
Maker   ALTERA [ ALTERA CORPORATION ]http://www.altera.com
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7. High-Speed Differential Interfaces in
the Cyclone III Device Family
December 2011
This chapter describes the high-speed differential I/O features and resources in the
Cyclone III device family.
High-speed differential I/O standards have become popular in high-speed interfaces
because of their significant advantages over single-ended I/O standards. The Altera
III device family (Cyclone III and Cyclone III LS devices) supports LVDS,
BLVDS, reduced swing differential signaling (RSDS), mini-LVDS, and point-to-point
differential signaling (PPDS).
This chapter contains the following sections:
High-Speed I/O Interface
Cyclone III device family I/Os are separated into eight I/O banks, as shown in
Each bank has an independent power supply. True output drivers for
LVDS, RSDS, mini-LVDS, and PPDS are on the left and right I/O banks. These I/O
standards are also supported on the top and bottom I/O banks using external
resistors. On the left and right I/O banks, some of the differential pin pairs (p and
pins) of the true output drivers are not located on adjacent pins. In these cases, a
power pin is located between the
pins. These I/O standards are also
supported on all I/O banks using two single-ended output with the second output
programmed as inverted, and an external resistor network. True input buffers for
these I/O standards are supported on all I/O banks.
For more information about the location of Cyclone III device family true differential
pins, refer to the
webpage on the Altera website.
© 2011 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
December 2011
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