I wrote 2 articles about doing such conversions way back when on getting at the I2S connections for "The Audio Amateur" (now AudioXpress). The articles were entitled "Get on the Bus" and they appeared in 1995 and 1997. http://www.audioxpress.com/magsdirx/backissues/BISAAM.htm
While the specifics are a bit dated, the principles are still relevant.
Kal
While the specifics are a bit dated, the principles are still relevant.
Kal