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ADAU1452 ASRC not working

SigmaDSP & SigmaStudio MBiester149 Mar 14, 2021 00:00 2 replies Original on forum ↗
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MBiester149 Question
Mar 14, 2021 00:00

Hi,

Since two days im trying to get asyncronous input sources to work via the ASRC of the ADAU1452.
The DSP is working fine with synchronous sources!

As you can see in the bunch of pictures below (sorry there are many) I tryed to get an 44.1khz I²S source to be synced to the 48khz DSP clock.
After a new boot the output signal begins to change until it becomes static after 1 sec.
The error register reads an error in ASRC0.

All other ASRCs are turned off.
I also checked the signal on pins 60 to 62. So there is no connection problem.

The BCLK is also present with LRCLK x 64 = 2.88Mhz

Why is it not syncing onthe input signal?

I'm realy out of ideas.
Would be thankfull for any ideas!

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

asrc

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MBiester149 Reply
Mar 14, 2021 00:00

Forgot a picture of the input and output registers

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MBiester149 Reply
Mar 21, 2021 00:00

Well ...

figured it out myself. The clock source of each serial input needs to be matched with its clock domain. Confused this setting with the clock gens 1 through 3.

This question can now be closed!