AR# 58730

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LogiCORE IP Video Scaler v8.0 - Why do I see noise in output from the Video Scaler when loading a COE file with negative coefficients?

Description

Why do I see noise in output from the Video Scaler when loading a COE file with negative coefficients?

Solution

This is a known issue that affects the Video Scaler v8.0, v8.0 (Rev. 1), v8.1 and v8.1 (Rev. 1).

This issue happens when the coefficients contain negative numbers and the MEMORY_INITIALIZATION_RADIX = 10.

You can work around this problem by using binary or hexadecimal coefficients and updating the radix in the COE file to:

MEMORY_INITIALIZATION_RADIX = 2 or 16

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
54540 LogiCORE IP Video Scaler - Release Notes and Known Issues for Vivado 2013.1 and newer tool versions N/A N/A
AR# 58730
Date 08/19/2014
Status Archive
Type General Article
IP
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