PCM5102A: BCK PLL to Internal Clocks(3-Wire PCM)

hideyuki sakai

Mastermind 6250 points

Part Number: PCM5102A

Dear, Sir.

My customer is interested in PCM5102A & BCK PLL to Internal Clocks(3-Wire PCM)

usage.

Table 11 shows the relation with sampling frequency and BCK.

I am not sure the number of 32 & 64.

What is the meaning of these numbers? L+R=32bit & 64bit?

Best Regards,

H. Sakai

over 5 years ago

0 hideyuki sakai over 5 years ago

Mastermind 6250 points

Dear, Sir.

Sorry to ask you again.

The datasheet is described as ;

If no external SCK at power-up, The internal PLL supply internal SCK.

I wonder SCK = Low during LRCK 16 cycles would be needed to activate

that?

Please give your advice, again.

Best Regards,

H. Sakai

0 Paul_Frost over 5 years ago in reply to hideyuki sakai

TI__Guru 52663 points

Hi Sakai-san,

The 32 and 64 are the bit-clock multipliers. For example, if fS =48kHz, an you have 16 bit data on 2 channels, then BCK=32*fS = 1.536MHz. If you have 32 bit data on 2 channels, then you have BCK=64*fS. = 3.072MHz.

If you are using 3 wire mode, then SCK should be grounded.

Thanks!
Paul

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PCM5102A: BCK PLL to Internal Clocks(3-Wire PCM)