Hello, im working on a diy SDR using basic audio gear.
In the prototipe tests I had already figured out how to do the data aquisition using a simple pcm1808 sampling baseband upt to 200ks/S.
However the pcb has arrived from jlcpcb and the ADC seems not responsive, i have already checked every signal going into the ADC and they seem to be ok.
What can cause a pcm1808 to not put out data?
I2S Signals going from the esp32 configured at 48ks/S to the pcm1808 are these:
scki pin-6 12.288mhz
lrck pin-7 48khz
bck pin-8 3.072mhz
*edit:Corrected this
All clocks seem to be healthy.
I have checked with known good ADC's, one thing i have not measured is the phase alignment on these clocks but there's not any significant jitter that i can see