Re: STA013 problem



Pooh Bear wrote:
> eeh wrote:
>
> > Thanks for your reply.
> >
> > For the sta013, the I2C bus is ued to configure the chip and the SPI
> > interface (Pins 5,6,7) is used to stream the mp3 data into it. I used
> > normal IO port to push data so that I need to swap bits before
> > serialize into the STA013.
> >
> > The I2C interface is indeed OK as it returns correct chip ID, and so I
> > think it is OK. I think I should say it more firmly.:)
>
> Yet a closer look suggests that the serial data in is indeed like SPI but
> uses some wacky pin names !
>
Acutally someone used this chip called the data source port SPI and so
I also mention it as a SPI.

> Also it has to handshake with data_req. Note that the active state of
> data_req is selectable in one of the configuration registers.
>

I have configured the polarity of the data_req to be active high.

> I still reckon an absence of serial data out to your DAC means that the
> sta013 input isn't seeing any data in.

I will follow this direction to debug. Thank for your help.

>
> Graham

.

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