Altera Reed-Solomon II MegaCore Function - Manual (Page 17)

Reed-Solomon II IP Core Functional Description
3
2015.05.01
UG-01090 Subscribe
Send Feedback
This topic describes the IP core’s architecture, interfaces, and signals.
Architecture
You can parameterize the Reed-Solomon II IP core as an encoder or a decoder.
The encoder receives data packets and generates the check symbols; the decoder detects and corrects
errors.
Encoder
When the encoder receives data symbols, it generates check symbols for a given codeword and sends the
input codeword together with the check symbols to the output interface. The encoder uses backpressure
on the upstream component when it generates the check symbols.
Figure 3-1: Reed-Solomon II Codeword Encoding
1 238
Check Symbols
Data Symbol
239 2 ... 237 1 238
Encoded Codeword
239 2 ... 237 P1 ... P15 P16 RS II Encoder
© 2015 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, 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 www.altera.com/common/legal.html . 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.
ISO
9001:2008
Registered
www.altera.com
101 Innovation Drive, San Jose, CA 95134