Re: STA013 problem

eeh wrote:

> 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.

Uh ?

This part doesn't have an SPI interface. It would be odd if it did really
since there'd then be little point in it having an I2C 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!

I think you're confusing SPI with something else.

What's all this about swapping bit order too ? The audio data ? A chipset
solution would do that for you if competently designed.

I suspect you've misunderstood something big time.

Graham


.

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