i.MX537 CSI input timing at RGB888 format

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i.MX537 CSI input timing at RGB888 format

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ko-hey
Senior Contributor II

Hi all

My customer want to input RGB888 format in i.MX537.

But we can't find a timing chart to input RGB888 format.

So we can't figure out the input timing.

Is there any document for detail description ?

Ko-hey

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi ko-hey

timings are described in Table 59. Camera Input Signal Cross Reference, Format and Bits Per Cycle

Table 60. Sensor Interface Timing Characteristics IMX53CEC

Best regards

igor

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ko-hey
Senior Contributor II

Hi Igor

Thanks, but the table is not my Wish.

We want to understand the interface specification when we use RGB888 format.

Of course, I know that RGB is inputted to the order.

Will there a specification between each color of the input ?

(For example, we have to add one clock interval, etc.)

Also we want to know a pixel clock input.

Does user need to enter a pixel clock at three times when they use RGB888 format ?

According to the RM, RGB888 needs 3 cycles per 1 pixel in parallel I/F.

So I have to input a pixel clock at three times.

Is it correct ?

ko-hey

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi ko-hey

>Will there a specification between each color of the input ?

Table 59 shows R - first cycle, then G, then B

>Does user need to enter a pixel clock at three times when they use RGB888 format

yes, also Table 60 should be satisfied

>So I have to input a pixel clock at three times.

yes

Best regards

igor

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ko-hey
Senior Contributor II

Hi Igor

I understand about pixel clock.

How about Vsync and Hsync ?

According to Figure 45-17 of RM, Vsync and Hsync width is as same as Data width.

Does user need to change Vsync and Hsync width ?

Addition for above, is there any restriction between Vsync and Hsync ?

ko-hey

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi ko-hey

Vsync and Hsync are the same as in non-RGB888 formats,

check Sensor Interface Timing Characteristics in datasheet.

Best regards

igor

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ko-hey
Senior Contributor II

Hi Igor

Thanks! I understand.

ko-hey

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