DS90UB913A-Q1: DS90UB913A-Q1:

Beomkyu Kim

Hi Team, I have some questions about SERDES.

Normally, SERDES is used to convert data between serial data and parallel interfaces in each direction.

Also, coaxial cable is commonly used for high speed communication and data transfer on long distance of vehicle interface.

But, in case of short distance, we don't need SERDES to connect between image sensor and ECU.

In other words, we can use the parallel data as image sensor output to connect directly with ECU.

Here's the question: Even though conversion(parallel to serial) is not necessary, is there any case to use SERDES?
If yes, what's the purpose of using SERDES?

Thank you

Beomkyu Kim

over 6 years ago

0 Casey McCrea over 6 years ago

TI__Guru** 103215 points

Hello Beomkyu,

For short distance where the signals from the image sensor can properly transmit to the ECU then there is no need for SERDES unless maybe you want to do a format conversion (ex. RGB to CSI-2).

Best Regards,

Casey

0 Beomkyu Kim over 6 years ago in reply to Casey McCrea

Prodigy 70 points

Hello, Casey McCrea.

Thank you for your comment.

Then, how long should a short distance be? less than 10cm?

One more question. In addition to format conversion, is SERDES sometimes used for security reasons (such as anti-hacking)?

Best Regards,

Beomkyu Kim

0 Casey McCrea over 6 years ago in reply to Beomkyu Kim

TI__Guru** 103215 points

Hello Beomkyu,

Distance is dependent on board design and I/O requirements of the devices on either side. I can not give a number. I haven't seen this used on the same board for anti-hacking.

Best Regards,

Casey

0 Beomkyu Kim over 6 years ago in reply to Casey McCrea

Prodigy 70 points

Hello, Casey McCrea.

Thank you for your reply.

It was helpful for me.

Actually, I have seen the cases where Serializer and Deserializer are used on the same board without a coaxial cable.

Even though the distance between image sensor and processor was very short, Serializer and Deserializer were used.

That's why I asked.

0 Casey McCrea over 6 years ago in reply to Beomkyu Kim

TI__Guru** 103215 points

Hello Beomkyu,

Ok, I am not familiar with this case but there is no problem to do so! Please let me know if we can close this ticket or if you still have some remaining questions.

Thanks,

Casey

0 Beomkyu Kim over 6 years ago in reply to Casey McCrea

Prodigy 70 points

Hello Casey.

Thanks. we can close this issue.

Have a nice day!

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DS90UB913A-Q1: DS90UB913A-Q1: