PCM5100A-Q1: 12KHz sampling frequency

Young Kee Jung

Prodigy 60 points

Part Number: PCM5100A-Q1

Hi,

I would like to use 12KHz sampling rate(WCLK) on the PMC5100.

Below is my question,

What SCK frequency should I use for the 12KHz sampling frequency?

below capture has in data sheet page24 but it does not have 12KHz sampling rate information.

Question1. so, how to using the system clock frequency value?(ex. example or reference guide)

Qustion2. If i use for 12KHz sampling rate can i use quard divide of the 48KHz sampling rate base?

ex) - SCK : 1.536MHz(quard divide of 48KHz) or

- BCK : 384KHz(for 32Fs)

- LRCK : 12KHz

Regards

YK Jung

over 7 years ago

0 Diego Melendez over 7 years ago

TI__Guru 57800 points

Hi, YK,

The SCK frequency for operation under 12KHz sample rate should be as follows:

You need to make sure that the clock conditions specified in the datasheet are met to ensure the normal operation of the device.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Young Kee Jung over 7 years ago in reply to Diego Melendez

Prodigy 60 points

Dear Diego,

Thanak you for your reply.

But, can not opened your replay, it may be link broken.

So, could you send me your answer by my e-mail?

my e-mail address is "deega@wtmec.com"

Best regards,
YK Jung

0 Diego Melendez over 7 years ago in reply to Young Kee Jung

TI__Guru 57800 points

Hi, YK,

Sorry for the delay, I uploaded the values again, please refer to the following table.

Sampling Frequency	System Clock Frequency (FSCK) MHz
Sampling Frequency	128 fs	192 fs	256 fs	384 fs	512 fs	768 fs	1024 fs	1152 fs	1536 fs	2048 fs	3072 fs
12KHz	1.536*	2.304*	3.072	4.608	6.144	9.216	12.288	13.824	18.432	24.576	36.864

* Supported by PLL mode

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Young Kee Jung over 7 years ago in reply to Diego Melendez

Prodigy 60 points

Dear Diego,

Thank You for your relay.

Best Regards,

YK Jung

Audio

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PCM5100A-Q1: 12KHz sampling frequency