STA013 problem

Hi,

I have problem to let the STA013 working.

Let me say some background information: It seems that the I2C
interface is OK. I can recognize the chip by retrieving the chip ID. I
can upload the configuration file without problem. The crystal
frequency is 14.3818MHz. I know that some register values are different
for different frequencies.

I download the data to the SPI interface. I know that it is required to
swap bit order. But The chip cannot output digital signal to the AD
converter CS4330. The SDO always sticks to 0V. :{

Could anyone give me some hints? Any hint is valuable. Thanks!

.

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