5 Replies Latest reply on Dec 7, 2018 3:53 AM by VlKh_2251656

Clock source in example fx3 (AN75779)

VlKh_2251656 Dec 6, 2018 11:41 PM

Hello!

Now I will explore your example:

AN75779

How to Implement an Image Sensor Interface Using EZ-USB FX3 in a USB Video Class (UVC) Framework

It uses a camera module MT9M114.

I don't have this module.

I have a similat module, but it does not have an internal clock source.

Therefore, I want to send him a clock frequency from FX3 dev board (through any pin)

Tell me, is it possible to do?

How?

Thank you very much!

1. Re: Clock source in example fx3 (AN75779)

SrinathS_16 Dec 7, 2018 1:50 AM (in response to VlKh_2251656)

Hello,

- To generate clock for the image sensor module, you can use an external crystal.
- In case you wanted to generate clock from FX3, you can use the complex GPIO to generate a PWM based clock. Please refer to the GpioComplexApp that comes with the FX3 SDK for example implementation of PWM. This example sets the duty cycle of the PWM to 25% but it can be modified for any desired duty cycle.

Best regards,
Srinath S
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2. Re: Clock source in example fx3 (AN75779)

VlKh_2251656 Dec 7, 2018 2:55 AM (in response to SrinathS_16)

Many thanks!
It's very good answer!
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3. Re: Clock source in example fx3 (AN75779)

VlKh_2251656 Dec 7, 2018 3:45 AM (in response to VlKh_2251656)

Sorry, but I don't find
GpioComplexApp project

in C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3 folder....
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4. Re: Clock source in example fx3 (AN75779)

SrinathS_16 Dec 7, 2018 3:51 AM (in response to VlKh_2251656)

Hello,

Please find the same in the following path.
C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\firmware\serialif_examples\cyfxgpiocomplexapp

Best regards,
Srinath S
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5. Re: Clock source in example fx3 (AN75779)

VlKh_2251656 Dec 7, 2018 3:53 AM (in response to SrinathS_16)

Good!

Many thanks!
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