Input the BT.709 format in i.MX 6DQ.

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Input the BT.709 format in i.MX 6DQ.

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keitanagashima
Senior Contributor I

Dear Sir or Madam,

Hello.

My customer would like to input the below format into i.MX 6DQ.

====

Format : BT.709 YUV422 / 8 bit

Resolution : 720p (720 x 1280)

Frame rate : 60 fps

Bus width : 16bit (1cycle)

====

I found the below description on IMX6DQAEC(Rev.3).

"YCbCr, 16 bits—Supported as a sub-case of the YCbCr,20 bits, under the same conditions (BT.1120 protocol)"

So, above format looks support in i.MX6DQ.

[Question]

Is it possible to support the above format in i.MX6DQ?

(Is the performance, too, OK?)

Best Regards,

Keita

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Keita

yes this format can be supported in i.MX6DQ, performance is

described in IMX6DQRM p.2732

The input rate supported by the camera port is as follows:

For parallel interface, the maximum speed of the interface is 240Mhz. The required

operating frequency of the interface is calculated in the following way:

F = FH * FW * FPS * BI * DF

Where

• FH = frame height (in pixels)

• FW = Frame width (in pixels)

• fps = frame rate (frames per second)

• BI = typically 35% overhead, should be assumed as 1.35. The actual blanking

intervals are a parameter of the attached device.

• DF = data format, defines the number of cycles needed to send a single pixel.

The number of cycles needed to send a single pixel depends on the interface and the data

format.

Data format examples:

• YUV422 over 16 bit = 1 cycles/pixel

• RGB888 over 8 bit = 3 cycles/pixel

• RGB565 over 16 bit = 2 cycles/pixel

• Bayer/Generic data = 1 cycle/pixel

• YUV422 over 8 bit = 2 cycles/pixel

• BT.656, YUV422 format = 2 cycles/pixel

• BT.1120, YUV422 format = 1 cycle/pixel

Examples of supported interfaces:

• 3.2MP camera, 15fps, yuv422 format, 8 bit interface

• 1080P30, yuv422, 8 bit interface

Best regards

igor

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Keita

yes this format can be supported in i.MX6DQ, performance is

described in IMX6DQRM p.2732

The input rate supported by the camera port is as follows:

For parallel interface, the maximum speed of the interface is 240Mhz. The required

operating frequency of the interface is calculated in the following way:

F = FH * FW * FPS * BI * DF

Where

• FH = frame height (in pixels)

• FW = Frame width (in pixels)

• fps = frame rate (frames per second)

• BI = typically 35% overhead, should be assumed as 1.35. The actual blanking

intervals are a parameter of the attached device.

• DF = data format, defines the number of cycles needed to send a single pixel.

The number of cycles needed to send a single pixel depends on the interface and the data

format.

Data format examples:

• YUV422 over 16 bit = 1 cycles/pixel

• RGB888 over 8 bit = 3 cycles/pixel

• RGB565 over 16 bit = 2 cycles/pixel

• Bayer/Generic data = 1 cycle/pixel

• YUV422 over 8 bit = 2 cycles/pixel

• BT.656, YUV422 format = 2 cycles/pixel

• BT.1120, YUV422 format = 1 cycle/pixel

Examples of supported interfaces:

• 3.2MP camera, 15fps, yuv422 format, 8 bit interface

• 1080P30, yuv422, 8 bit interface

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

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keitanagashima
Senior Contributor I

Hi Igor,

Hello.

Thank you very much!

Best Regards,

Keita

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