PCM5121: Asking for the PCM5121 schematic and layout review

SHH

Mastermind 30301 points

Part Number: PCM5121
Other Parts Discussed in Thread: PCM5142

Hi Team,

Would you please help review the schematic and layout for PCM5121?

customer found the output has the abnormal output.

here are the schematic and layout file.

BR,

SHH

over 5 years ago

0 Paul_Frost over 5 years ago

TI__Guru 52683 points

Hi SHH,

I suspect that the glitch is due to corruption of the I2S signal. What speed is it operating at? Is it geographically laid out near hi-power or switching signals?

Thanks!
Paul

0 SHH over 5 years ago in reply to Paul_Frost

TI__Mastermind 30301 points

Hi Paul,
In the PCM5121 spec sheet, Timing Requirements of SCK is defined in page 11, but other I2S signals timing are not defined.(BCK, DATA, LRCK)
Do you have any solution and could you get signal timing spec and any comments for this issue ?
Currently, customer is using I2S as 3 wire mode (BCK, DATA, LRCK, not use SCK) by FW setting.

BR,
SHH

0 Paul_Frost over 5 years ago in reply to SHH

TI__Guru 52683 points

Hi SHH,

Please look at the timing table for the PCM5142 - it is the same digital front end.
www.ti.com/.../pcm5141.pdf

Thanks!

Audio

Audio forum

PCM5121: Asking for the PCM5121 schematic and layout review