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CX3 - Image Sensor Configuration - H/V-Blanking | Cypress Semiconductor

CX3 - Image Sensor Configuration - H/V-Blanking

Summary: 4 Replies, Latest post by huihai.lu_1861991 on 08 Sep 2016 05:30 AM PDT
Verified Answers: 0
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huihai.lu_1861991's picture
User
8 posts

Hi,

I am unsure if this is the right place to ask this specific question, but hopefully someone knows the answer!

 

In Cypress EZ USB Suite's CX3 Configuration project, in the Frame Configuration, we need to set both H and V blanking values. In the example code for OV5640, H blanking is set to 50 for all resolutions and V blanking set to 5. I went through the spec. and ov's source code, and still couldn't figure out how 50 and 5 were calculated!

 

I am trying to port the example code to support another OV sensor, so without knowing these two values, I couldn't make the project work.

 

Thanks!

mady's picture
Cypress Employee
1093 posts

Hi,

The H-blanking and V-blanking are not rigid and are adjusted to make the other parameters fit.

Please create a Tech Support case so that our engineers will assist you in setting the config for your desiref frame rate and resolution.

Regards,

-Madhu Sudhan

huihai.lu_1861991's picture
User
8 posts

Hi Madhu,

Thanks for the infor. After contacting a local OVT FAE, I now have a better understand of H/V blanking. Thanks!

Regards,

Huihai

vhaditya's picture
User
6 posts

Hi,

I 'm having similar issues. If resolved, can you post the FV and LV values here?

huihai.lu_1861991's picture
User
8 posts

Hi vhaditya
I am unsure about what are FV and LV. But for H/V blanking, as Madhu explained, those two values are related to how you configure your sensor. For example, if you total horizontal timing (HTS) is 1970 and your horizontal size is 1920, then your H blanking should be specified as 50. Hope that will help.

Regards,
Huihai

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