/* Set tx&rx page start address and initialize page own.  */
void I2S_SetDMABuf(I2S_TypeDef *I2Sx, u8 *I2STxData, u8 *I2SRxData)
/* Set tx&rx page start address and initialize page own.  */
void I2S_SetDMABuf(I2S_TypeDef *I2Sx, u8 *I2STxData, u8 *I2SRxData)
{
	if (I2STxData) {
		I2Sx->IS_TX_PAGE_PTR = (u32)I2STxData;
		I2S_TxDmaCmd(I2Sx, DISABLE);
	}
	if (I2SRxData) {
		I2Sx->IS_RX_PAGE_PTR = (u32)I2SRxData;
		I2S_RxDmaCmd(I2Sx, ENABLE);
	}
}