Hi.
I'd like to know the CSI performance.
Is it possible to input dual 1080p@60 video into CSI?
I think it is impossible.
Because, there is below limitation.
F = FH * FW * FPS * BI * DF
Where
FH = frame height (in pixels)
FW = Frame width (in pixels)
fps = frame rate (frames per second) ? BI = typically 35% overhead, should be assumed as 1.35. The actual blanking intervals are a parameter of the attached device.
DF = data format, defines the number of cycles needed to send a single pixel.
If one use a 1080p@60 camera;
167.96MHz = 1080 * 1920 * 60 * 1.35 * 1 < 240MHz --> OK
In case of Dual camera;
335.92MHz = 1080 * 1920 * 60 * 1.35 * 1 * 2 > 240MHz --> NG
If one use a 1080p@60 and a 720p@60 camera;
242.6MHz = (1080 * 1920 * 60 * 1.35 * 1) + (1280 * 720 *60 *1.35 * 1) > 240MHz --> NG
Is my understanding right?
Keita
Solved! Go to Solution.
Correct for single IPU.
Have a great day,
Yuri
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Correct for single IPU.
Have a great day,
Yuri
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Dear Yuri,
Hello.
Thank you for your reply.
>Correct for single IPU.
If one use i.MX6DQ (= 2 IPUs), is it possible to input dual 1080p@60 video?
IPU0 <-- YUV422 1080p@60
IPU1 <-- YUV422 1080p@60
Keita
Yes.