PCM5101A: 3.5kHz Fs during start-up before normal operation

Hideki Hayashi1

Part Number: PCM5101A

Hi team,

Customer use PCM5101A as slave. During normal operation, input clock is as following. and LRCK is synchronized with a clock named BBIC_FS.

LRCK: 8kHz (sync with BBIC_FS)

BCK: 256kHz

SCK: 2.048MHz

Before normal operation, there are not BBIC_FS but other clocks exist. During this time, LRCK is 3.5kHz. Based on this situation and attached waveform, please answer question?

Q1. Is there any problem with 3.5kHz LRCK before normal operation?

Q2. It looks like that LRCK sync with the half-way BBIC_FS. Is there any issue at this clock varies?

Best regards,

Hideki

over 2 years ago

+1 Arash Loloee over 2 years ago

TI__Mastermind 19340 points

Hello, the part is not going to work with LRCK of 3.5K but I don't think it will harm the part either. Was this your question?

Regards,

Arash

0 Hideki Hayashi1 over 2 years ago in reply to Arash Loloee

TI__Expert 6000 points

Hi Arash,

I believe you understands right.

I know PCM5101A doesn't work with 3.5kHz LRCK, but was asking whether this may harm the device or get unexpected behavior in normal operation with 8kHz LRCK.

Best regards,

Hideki

0 Arash Loloee over 2 years ago in reply to Hideki Hayashi1

TI__Mastermind 19340 points

Note: I am closing this inquiry as the the conversation has been shifted to email.

Regards,

Arash

Audio

Audio forum

PCM5101A: 3.5kHz Fs during start-up before normal operation