AR# 42509

LogiCORE IP Video Scaler v4.0 - What are the valid values for the aperture_start_pixel and the aperture_end_pixel?

描述

What are the valid values for the aperture_start_pixel and the aperture_end_pixel?

In the LogiCORE IP Video Scaler v4.0 data sheet on page 8, it states that the "aperture_start_pixel" and the "aperture_end_pixel" must be set to an even number. 

However, in the v4.0 user guide on pages 39 and 40, odd values are used as examples for both the "aperture_start_pixel" and for the "aperture_end_pixel."

解决方案

The following applies to the Video Scaler v3.0 and v4.0.
 
  • The Start Pixel must always start on an even number (when counting from pixel 0).
    i.e., Start Pixel =  0, 2, 4, 6 ... 720, 722, ... etc.
     
  • The End Pixel must always end on an odd number (when counting from pixel 0).
    i.e., End Pixel = 719, 7 21, ... 1919, 1921 ... etc.
     
  • The total number of pixels between the Start and End Pixel should be an even number (when counting from 1).
    i.e., Total apertures size = 720, 1280, 1080, 1920, etc.

Please see (Xilinx Answer 31958) for a detailed list of LogiCORE IP Video Scaler Release Notes and Known Issues.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
31958 LogiCORE IP Video Scaler - Release Notes and Known Issues N/A N/A

相关答复记录

Answer Number 问答标题 问题版本 已解决问题的版本
31958 LogiCORE IP Video Scaler - Release Notes and Known Issues N/A N/A
AR# 42509
日期 08/11/2014
状态 Archive
Type 综合文章
IP