Re: PCM Wav to I2S?

>Hi there,
>
>Im working with the AD1859 variable sample rate DAC. It needs the audio
>being fed in to be serial data in either I2S or Left Justified format.
>
>For my initial experiments I want to send audio data from a PC's serial
>port to this serial input port on the DAC and generate the clock
>separately.
>
>Can I use a PCM wav file for the audio data? Does the data need to be
>altered in anyway to fit either the I2S format or Left-Justified
>format?
>
>I've been struggling to find detailed information on these formats as
>google only comes up with the IC's that support them...

A PC's UART-based serial ports aren't designed to send data in those
formats, or at the necessary speed.  I don't think that there's going
to be any reliable way to get the data you want from a UART, or from a
PC parallel port.

Your best bet is probably to start with a PC sound card that has an
S/PDIF digital output capability.  Connect the S/PDIF output (via
either coaxial cable, or a TOSLINK optical cable) to an S/PDIF
receiver IC's input.  Run the output of the S/PDIF receiver IC into
the AD1859.

-- 
Dave Platt <dplatt@xxxxxxxxxxxx>                                   AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
  I do _not_ wish to receive unsolicited commercial email, and I will
     boycott any company which has the gall to send me such ads!
.

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