topic Re: 2 questions about mx31's CSI interface in i.MX Processors

2 questions about mx31's CSI interface

Ken_Lin — Mon, 06 Oct 2008 09:17:00 GMT

Hi,everybody.

I'm new for the MX31.In my project, i must use MX31's Camera Sensor Interface. And my sensor output in BT.656 YUV422. But i have 2 questions about the CSI.

1. My sensor output 8-bits data, should i connect them to Mx31's CSI_D6~13 pins or CSI_D8~D15 pins or others?

2. How should I set the CSI CCIR Code Registers?

Should any one help me? Thanks.

Re: 2 questions about mx31's CSI interface

ADUBOST — Mon, 01 Dec 2008 15:47:53 GMT

Hi,

I don't know if it will be usefull for you but I changed the original iMAGIC CMOS sensor by a video decoder on an iMX27 and i connected it on CSI D0-D7.

Bye

adubost

Re: 2 questions about mx31's CSI interface

enricobe — Wed, 03 Dec 2008 17:45:23 GMT

Hi,
you have to use D8-15 when using a 8-bit sensor/decoder.
Regards,
Enrico

Re: 2 questions about mx31's CSI interface

enricobe — Wed, 03 Dec 2008 17:48:51 GMT

Hi, Ken,
by the way, does your camera send interlaced or progressive frame?
I've got values for CCIR registers with interlaced mode, but conversion from interlaced to progressive is not functional.

        __raw_writel(0x40596, CSI_CCIR_CODE_1);
        __raw_writel(0xD07DF, CSI_CCIR_CODE_2);
        __raw_writel(0xFF0000, CSI_CCIR_CODE_3);

E

Re: 2 questions about mx31's CSI interface

DurianBoy — Wed, 22 Apr 2009 07:01:19 GMT

Hi Eric and Ken, I am also using an interlaced camera device and I need the MX35 to convert it to progressive mode before sending the buffer on to a computer VGA monitor. Did you guys get this to work?

What registers need to change to do this conversion?

Thanks a million!

Re: 2 questions about mx31's CSI interface

Ken_Lin — Mon, 07 Dec 2009 18:21:14 GMT

Hi,DurianBoy

I found that Interlace 2 Progressive is a terrible job in MX31, and I've give up that idea.

I only use one field in 2 fields of a frame as many guys do.

It's a late reply, and i wish you've solved it.