Hi community,
I have a question about i.MX6 IPU CSI.
I want to know how to calculate the CSI capability by the equation in page 2818 in IMX6SDLRM Rev.2.
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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.
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If input 1080p@30 image (YUV422 over 8bit), which calculation is correct?
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Calculation A.
F = 1920 pixels * 1080 pixels * 30 fps * 1.35 * 2cycles/pixel
= 167,961,600 Hz
= 168.0 MHz (167,961,600/(1000*1000))
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Calculation B.
F = 1920 pixels * 1080 pixels * 30 fps * 1.35 * 2cycles/pixel
= 167,961,600 Hz
= 160.2MHz (167,961,600/(1024*1024))
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I think Calculation A is correct, right?
Best Regards,
Satoshi Shimoda
