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TLV320AIC23b的DOUT脚无输出

Other Parts Discussed in Thread: TLV320AIC23B

现想做一个声音采集与传输,用的TLV320AIC23b与FPGA相连,配置用SPI接口,数据用DSP模式,TLV320AIC23b工作在Master模式,选择MICIN,外部用无源12M晶振,麦克风MIC用10KHz正弦波代替,采样频率设为44.1KHz。现在配置完成后BCLK有12M输出,且LRCOUT有高脉冲产生,周期为44.1KHz,但DOUT脚一直为低(如附件),请问一下这是为什么?万分感谢呀。

寄存器设置:

0001111_000000000
0000000_010010111
0000001_010010111
0000010_001111001
0000011_001111001
0000100_111110101
0000101_000000101
0000110_000000001
0000111_001000011
0001000_000100011
0001001_000000001