16 Integrated Interchip Sound (IIS) 119
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
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16.3.3 DMA mode
1.conf IIS_ADR0 and IIS_ADR1
2.conf IIS_BAUD,IIS_BCLK_CFG,IIS_VALBIT,IIS_ALLBIT
3.conf IIS_CON0-1
4. conf IIS_DMA_RD_CNT and IIS_DMA_WR_CNT to kick start dma .
5.read DMA_CNT_PND which means 1 or 0.5 (IIS_DMA_CNT*16) bits data transmit had finished.
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