Sample rate 2Hz mismatch - SRC4192 can handle it?

Stelios Kirkalas

Other Parts Discussed in Thread: SRC4192

I have an I2S source, where SR might be 192000Hz, or it could slowly drift to 191998Hz (bad source, I know, but my design must be capable to handle such cases).

My design relies heavily on this clock, so if it's not stable everything is messed.

If I use SRC4192, will it fix the problem? I am skeptical if an ASRC can fix a +/-2 Hz mismatch.

Thank you for reading, waiting for replies!

over 12 years ago

0 Don Dapkus over 12 years ago

TI__Guru**** 189399 points

Hi, Stelios,

Sorry, we missed your post. Did you get this sorted out? What did you find?

-d2

0 Stelios Kirkalas over 12 years ago in reply to Don Dapkus

Prodigy 60 points

Hi Don,

No, I haven't try if the SRC4192 can fix a +/-2Hz sample rate difference (191998...192002 in, 192000 out).

I thought it would be better to receive a formal answer from TI before making any test fixture that might go wasted.

Well, can a SRC4192 fix that? :-)

0 Stelios Kirkalas over 12 years ago in reply to Stelios Kirkalas

Prodigy 60 points

I made a test board with SRC4192 and it seems it can handle this situation.

Case closed...

0 Don Dapkus over 12 years ago in reply to Stelios Kirkalas

TI__Guru**** 189399 points

Hi, Stelios,

Thanks for the feedback!!!

With the holidays and all, we are short-staffed, so I apologize we couldn't give you a formal answer.

-d2

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Sample rate 2Hz mismatch - SRC4192 can handle it?