Several of you have been looking at how to use the codec on the
Tiger boards.  I called DSP Research yesterday to find out some details.

READING from the CODEC

   When reading samples from the codec, the R/L bit in the status
register (see TABLE 7-9 on page 7-6 of the manual) tells whether the sample
is from the right or left channel.  Unfortunately, I forget to ask  if
0 is for the right or left channel but this should be easy to find out
by experimentation. 

    There are two bits in Control Register 1 (see TABLE 7-13 on page 7-8)
that determine what samples are read.

     LCHAN    RCHAN
      0        0      Codec held in reset and disconnect from serial ports
      1        0      The left channel is enabled.  All samples come from
                      the left channel.
      0        1      The right channel is enabled. All samples come from 
                      the right channel.
      1        1      Both channel are enabled.  Right and left samples
                      alternate.  Look at the R/L status bit to see which
                      one has been received


WRITING to the CODEC

      The LCHAN and RCHAN determine where the samples go as described in
the table above.  If both channels are enabled,  The R/L status bit tells
you where the sample will be sent.

Regards,
S. Tretter