Hi
About PCM6240-Q1, we have a detection issue:
Now we set the register 0x75 bit7 micbias_pdz: 0d = Power down MICBIAS and use outside LDO for MIC bias(8.5V), we found that PCM6240-Q1 can't detect the input open circuit.
The input open circuit detection condition needs to meet below:
Whether does internal MICBIAS must be used for input open circuit detection?
Best Regards!
Hello,
But the radiation is over customer's SPEC if we use internal MICBIAS.
Below is radiation test data:
Initial status:
Status 1: MICBIAS_PDZ (0x75 bit 7) :1d = Power up MICBIAS---> 0d = Power down MICBIAS
Currently, using the external LDO is minimum change for us.
The peripheral schematic of PCM6240-Q1 is same with EVB.
Could you give us suggestion?
Best Regards!
