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interfacing blackfin with ad1953 sigma audio processor


is there any sample code availabelfor interfacing AD1953 with BF (Programmers manula od ad1953 would also be fine)

i need stereo , i2s mode my fs = 28 khz, data is streamed throuh sport0 and controls through spi(ad1953 conncected as device 1).

i'm finding it difficult to configure the sport ans spi of black fin to suit ad1953 after POR.

what is the frequency required on TFS and BCLK