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PCM1808: pcm1808

Part Number: PCM1808

PCM1808: Main mode, 48K sampling frequency, no output

I used PCM1808 main mode, MD0,MD1 both high, 256Fs,SCKI is connected to a 12.288MHz active

Crystal oscillator, LRCK and BCK have good clock signal output, VREF is also 2.5 (VCC/2),DOUT has no signal output,

DOUT has no output regardless of whether VINR and VINL have analog input. From the oscilloscope, LRCK and BCK are synchronized,

It's out of phase with SCKI. The schematic diagram is the same as your evaluation board, except that the power filter capacitor is larger than yours. Please take a look.

  • Hi,

    Are both supplies applied and low ripple?

    how does the SCKI clock look? is it the appropriate amplitude, and relatively low jitter?

    in the case that DOUT is all zeros it sounds like the device may be muting itself - perhaps from a clock error