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AR# 31690

LogiCORE Reed Solomon Decoder v6.1 - Why, when Erasure Decoding is selected, is there is a difference between the Processing Delay on the CORE Generator GUI and the equation in the data sheet?

Description

When selecting erasure decoding, there is a difference between the processing delay value displayed on the CORE Generator GUI and the equation in the data sheet. Why?

Solution

There is an error in the DS252 (v4.1) data sheet on page 17. The upper limit is shown as 'n-k-1' whereas it should read 'n-k+1'. 

So, for example, for a RS(255,239) the processing delay is 357, which is the correct value displayed on the GUI.

AR# 31690
Date Created 09/16/2008
Last Updated 05/23/2014
Status Archive
Type General Article