topic Re: What to do with CSI0_DATA_EN input when connection camera without this signal. in i.MX Processors

What to do with CSI0_DATA_EN input when connection camera without this signal.

camz — Fri, 10 Oct 2014 18:11:56 GMT

I am looking for information on what to do with the CSI0_DATA_EN input on the i.MX6 when connecting a camera that only provides PIXCLK, HSYNC, and VSYNC.

The CSI0 interface will be configured for greyscale/generic 16-bit data mode.

Cheers,

Camz.

Re: What to do with CSI0_DATA_EN input when connection camera without this signal.

igorpadykov — Fri, 10 Oct 2014 23:59:57 GMT

Hi Martin

CSI0_DATA_EN input should be active for normal operation.

Usually in such cases this signal is selected with IOMUX

to some pad, with enabled pad pull-up. Also polarity can be changed

with IPUx_CSIx_SENS_CONF bit CSIx_DATA_EN_POL.

Best regards

igor

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Re: What to do with CSI0_DATA_EN input when connection camera without this signal.

camz — Tue, 14 Oct 2014 13:17:31 GMT

I guess I wasn't as clear with my question as I could have been. I am not looking for a software answer, this was not a question about how to configure the iomux. This was a hardware connection question.

I have a camera that provides data, pixel clock, h-sync, and v-sync signals (actually the sync signals are also called frame enable and line enable). It *does not* provide a data enable signal.

The question is what to do with the physical pin that would normally be connected via the iomux to data enable?

Should it be left unconnected? Tied high or low? Should it be connected to the h-sync / line enable signal? Should it be connected to the v-sync / frame enable signal?

Cheers,

Camz.

Re: What to do with CSI0_DATA_EN input when connection camera without this signal.

igorpadykov — Tue, 14 Oct 2014 13:57:28 GMT

Hi Martin

you can tie physical pin high or low or left unconnected (then enable

internal pin pull-up), necessary polarity can be changed

with IPUx_CSIx_SENS_CONF bit CSIx_DATA_EN_POL.

~igor

Re: What to do with CSI0_DATA_EN input when connection camera without this signal.

camz — Tue, 14 Oct 2014 14:01:43 GMT

Perfect, thank you.