TAS2505-Q1: First time played , sometimes with "zizi" noise

Hi Yang,

Could you please also share your initialization script and input clock frequencies (BCLK, WCLK) for us to review? Schematic would be good to review as well.
It may seem as if there is some digital clipping or some problem in the clock configuration.
The BCLK->RST->I2C sequence should be OK.

Best regards,
-Ivan Salazar
Applications Engineer

Hi Ivan,

  thanks you for reply,

  BCLK frequency is 3.072M, no clipping.  and please check blow register configuration, thanks again.

 {TAS2505_PAGE_SELECT, 0x00},

         {TAS2505_SW_RESET, 0x01},

         {TAS2505_PAGE_SELECT, 0x01},

         {TAS2505_LDO_CTRL, 0x00},

         {TAS2505_PAGE_SELECT, 0x00},

         {TAS2505_CLK_SETTING_1, 0x07},

         {TAS2505_CLK_SETTING_2, 0x94},

         {TAS2505_CLK_SETTING_3, 0x07},

         {TAS2505_CLK_SETTING_4, 0x00},

         {TAS2505_CLK_SETTING_5, 0x00},

         Delay（）

         {TAS2505_PAGE_SELECT, 0x00},

         {TAS2505_CLK_SETTING_6, 0x82},

         {TAS2505_CLK_SETTING_7, 0x87},

         {TAS2505_DAC_OSR_1, 0x00},

         {TAS2505_DAC_OSR_2, 0x80},

         {TAS2505_AUDIO_INTERFACE_1, 0x30}, /* I2S, 32bit */

         {TAS2505_AUDIO_INTERFACE_2, 0x00},

         {TAS2505_DAC_INST_SET, 0x02},

         {TAS2505_PAGE_SELECT, 0x01},

         {TAS2505_REF_POR_LDO_BGAP_CTRL, 0x10},

         {TAS2505_COMMON_MODE_CTRL, 0x00},

         {TAS2505_HP_ROUTING_SEL, 0x04},

         {TAS2505_HP_VOLUME, 0x75},      /* Headphone mute */

         {TAS2505_AINL_VOLUME_CTRL, 0x00},

         {TAS2505_OUTPUT_DRV_AINL_R_CTRL, 0x20},

         {TAS2505_HP_DRIVER_GAIN, 0x00},

         {TAS2505_SPEAKER_VOLUME_CTRL, 0x00},

         {TAS2505_SPEAKER_AMP_VOLUME_CTRL_2, 0x10},     /* 6dB */

         {TAS2505_SPEAKER_AMP_CTRL, 0x02},

         {TAS2505_PAGE_SELECT, 0x00},

         {TAS2505_DAC_CHANNEL_SETUP_1, 0xB0}, /* DAC Power*/

         {TAS2505_DAC_CHANNEL_VOLUME_CTRL, 0x00},

         {TAS2505_DAC_CHANNEL_SETUP_2, 0x04},

Hi Yang,

Thanks for sharing the register config. A couple comments:

• Could you try by swapping the values of MDAC and NDAC? ie. use NDAC = 7 and MDAC = 2. It seems the different equations are still met with your current values, but want to double check if this could be related.
• Could you try by moving the DAC enable command before enabling the analog front end? ie. before HP and Speaker enables:

 {TAS2505_PAGE_SELECT, 0x00},

 {TAS2505_SW_RESET, 0x01},

 {TAS2505_PAGE_SELECT, 0x01},

 {TAS2505_LDO_CTRL, 0x00},

 {TAS2505_PAGE_SELECT, 0x00},

 {TAS2505_CLK_SETTING_1, 0x07},

 {TAS2505_CLK_SETTING_2, 0x94},

 {TAS2505_CLK_SETTING_3, 0x07},

 {TAS2505_CLK_SETTING_4, 0x00},

 {TAS2505_CLK_SETTING_5, 0x00},



 Delay（）

 {TAS2505_PAGE_SELECT, 0x00},

 {TAS2505_CLK_SETTING_6, 0x87},

 {TAS2505_CLK_SETTING_7, 0x82},

 {TAS2505_DAC_OSR_1, 0x00},

 {TAS2505_DAC_OSR_2, 0x80},

 {TAS2505_AUDIO_INTERFACE_1, 0x30}, /* I2S, 32bit */

 {TAS2505_AUDIO_INTERFACE_2, 0x00},

 {TAS2505_DAC_INST_SET, 0x02},

 {TAS2505_DAC_CHANNEL_SETUP_1, 0xB0}, /* DAC Power*/

 {TAS2505_DAC_CHANNEL_VOLUME_CTRL, 0x00},

 {TAS2505_DAC_CHANNEL_SETUP_2, 0x04},

 {TAS2505_PAGE_SELECT, 0x01},

 {TAS2505_REF_POR_LDO_BGAP_CTRL, 0x10},

 {TAS2505_COMMON_MODE_CTRL, 0x00},

 {TAS2505_HP_ROUTING_SEL, 0x04},

 {TAS2505_HP_VOLUME, 0x75},      /* Headphone mute */

 {TAS2505_AINL_VOLUME_CTRL, 0x00},

 {TAS2505_OUTPUT_DRV_AINL_R_CTRL, 0x20},

 {TAS2505_HP_DRIVER_GAIN, 0x00},

 {TAS2505_SPEAKER_VOLUME_CTRL, 0x00},

 {TAS2505_SPEAKER_AMP_VOLUME_CTRL_2, 0x10},     /* 6dB */

 {TAS2505_SPEAKER_AMP_CTRL, 0x02},

Best regards,
-Ivan Salazar
Applications Engineer

Hi Ivan, 

    We followed your suggestions(directly copy registers you provided),but still have zizi sound.