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Altera_Forum
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16 years ago

Buffer Overflow and Underflow in Clocked Video Input/Output

Hi I am designing a video system to buffer three HD 1080p video stream. The input is in RGB 4:4:4 format at 148.5MHz. Output is also the same. I am using Quartus 9.0 SP1. The system for ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi

The width of read and write masters interfaces in the frame buffer is 128 bits. Yes this wastes some memory but this is not really an issue. Main problem is how to get rid of buffer underflow in video_output_f2 (As shown in the attached) diagram. I previously had buffer overflows in the video_input_f2. Now what I get is buffer underflow in video_output_f2 module. I am not really sure what can be the reason for that.