_dsp_clear_sample_buffer
_dsp_clear_sample_buffer(chip,SPDIFO_IP_OUTPUT_BUFFER1,256);
_dsp_clear_sample_buffer(chip,SPDIFO_IP_OUTPUT_BUFFER1,256);
_dsp_clear_sample_buffer (chip,src_buffer_addr,8);
_dsp_clear_sample_buffer (chip,src_delay_buffer_addr,32);