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PCM1863: the clock configurations for PCM1863

tiper liu
Prodigy 250 points
Part Number: PCM1863

Hi, All:

I am using PCM1863 in a audio recorder project, the application conditons:

audio source : 2 Micphone ( using differential input);

Clock source: SCKI= 24.576Mhz;

Audio output format:  I2S;

Sample rate: 96Khz;

ADC bit: 24Bit.

how to configure the registers related with clock.

I have configure 0X20= 0x51( Enable auto clock detection );

Question 1:   the P, R J and D of the PLL are set automatically ?

Question 2:   how to set below registers ( 0X25; 0X26 and 0X27)?

Question 3:   the detail steps to develop the driver? I have less experiences about audio ADC, I understand the below steps ( configure the audio input + configure the clock system + congfigure the audio output format), could you give some advice?

  • 0
    TI__Guru 57800 points

    Hi, Tiper,

    When the Auto clock detection mode is enabled, the parameters are set automatically according to the values in table 9. PLL should be configured manually when input MCLK is not related to the audio sampling rate.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer