STM32F105 I2S作为从设备，PCM标准，逻辑分析仪截图如下：

目前使用的配置如下
  /* CODEC_I2S peripheral configuration */
  SPI_I2S_DeInit(SPI2);
  I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_8k;
  I2S_InitStructure.I2S_Standard = I2S_Standard_PCMShort;
  I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_32b;
  I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
  I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx;
  I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable;

但是输出数据不对，请教下应该怎么设置？