I2S from SDIO with a clock rate of 49.152 MHz master clock rate?

Dear experts,

I wouild like to interface an I2S type 24-bit DAC, Texas Instruments (Burr-Brown) PCM1792A to the Galileo board.

As I need the SCK rate of 49.152 MHz it seems to me that the only serial type port for my application is the SDIO

interface. In addition to the SCK = SDIO CLK I need the three I2S signals as follows:

ADATA = SDIO DAT0

BCK    = SDIO DAT1, 192000 x 24 = 4.608 MHz

RLCK  = SDIO DAT2, 192 kHz

Is this the way to go or do you have better ideas.

I want to keep the components count at the minimum and I would like to use the DMA trsansfer.

The device driver should manipulate the DAT1 and DAT2 in such a way thet the properly timed

BCL and RLCK are generated.

Please comment and advice!