Usage of IPx_CSIx_DATA_EN

[ko-hey]

Hi all

I have a question about IPx_CSIx_DATA_EN.

I can't understand usage of the signal.

Is there any description ?

Is the signal active HIGH ? 

If yes, when the signal is LOW, the CSI can't latch a data.

Is it correct ?

Ko-hey

[igorpadykov]

Hi Ko-hey

yes this is correct : it is active high and one can

turn on internal pull-up of CSIx_DATA_EN pad.

When low, the CSI can't latch a data.

Best regards

igor

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[ko-hey]

Hi Igor

Thank you for your reply.

Let me confirm more detail.

1. When user set "1" to SION field of IOMUXC_SW_MUX_CTL_PAD_CSIx_DATA_EN, the pad functions as a DATA_EN.

Is it correct ?

2. Do we need to set something CSI0_DATA_EN_POL field ?

When we use DATA_EN with CSIx_HSYNC, CSIx_VSYNC and CSIx_PIXCLK at the same time, my understanding is as follow.

3. If the DATA_EN is LOW, regardless of the behavior of CSIx_HSYNC, CSIx_VSYNC and CSIx_PIXCLK, data isn't latched.

Is it correct ?

4. Data is latched only when the period of DATA_EN is HIGH.

Is it correct ?

Ko-hey

[igorpadykov · Accepted solution]

Hi Ko-hey

1. SION bit does not affect CSI0_DATA_EN_POL.

>2. Do we need to set something CSI0_DATA_EN_POL field ?

No.

> If the DATA_EN is LOW, regardless of the behavior of CSIx_HSYNC, CSIx_VSYNC and CSIx_PIXCLK, data isn't latched.

>Is it correct ?

Yes.

> Data is latched only when the period of DATA_EN is HIGH.

>Is it correct ?

Yes.

~igor

[ko-hey]

Hi Igor

Do you recommend the Pull-up connection if we don't use CSIx_DATA_EN ?

Ko-hey

[igorpadykov]

Hi Ko-hey

when IOMUX choses other mode, DATA_EN is always enable by setting high internaly.

~igor

[ko-hey]

Hi Igor

Thank you for your great support.

Ko-hey