topic Re: i.MX537 CSI input timing at RGB888 format in i.MX Processors

i.MX537 CSI input timing at RGB888 format

ko-hey — Wed, 01 Jul 2015 02:39:42 GMT

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

Re: i.MX537 CSI input timing at RGB888 format

igorpadykov — Wed, 01 Jul 2015 03:59:28 GMT

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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Re: i.MX537 CSI input timing at RGB888 format

ko-hey — Wed, 01 Jul 2015 04:34:46 GMT

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

Re: i.MX537 CSI input timing at RGB888 format

igorpadykov — Wed, 01 Jul 2015 04:40:57 GMT

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

Re: i.MX537 CSI input timing at RGB888 format

ko-hey — Wed, 01 Jul 2015 05:06:58 GMT

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

Re: i.MX537 CSI input timing at RGB888 format

igorpadykov — Wed, 01 Jul 2015 06:59:05 GMT

Hi ko-hey

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

check Sensor Interface Timing Characteristics in datasheet.

Best regards

igor

Re: i.MX537 CSI input timing at RGB888 format

ko-hey — Wed, 01 Jul 2015 11:25:21 GMT

Hi Igor

Thanks! I understand.

ko-hey