sgtl 5000 mic configuration

[kirankunnath]

Hai,

We are trying to configure mic(not using Lineout and Headphone) in SGTL5000 using the below configurations.

But we are not able to produce any data from I2S out.

The Power usuage is:

VDDA = VDDIO  = 3.3V

VDDD = 1.8V

Can anyone suggest what all the configurations needed for the mic.

We are configuring only,

1) CHIP_DIG_POWER   (0x0042)

2) CHIP_CLK_CTRL       (0x0008)

3) CHIP_I2S_CTRL        (0x0090)

4) CHIP_SSS_CTRL      (0x0010)

5) CHIP_ANA_CTRL      (0x0110)

6) CHIP_REF_CTRL      (0x01FE)

7) CHIP_MIC_CTRL       (0x0371)

8) CHIP_ANA_POWER  (0x4062)

Please suggest if any other configurations are needed.

Regards,

Kiran

[carlos_neri]

Kiran,

Take a look to this initialization, it might help:

This configuration enables:

- Microphone

- Headphone amplifier

- Line out

- 16Khz audio

SGTL5000_INIT_SIZE (18)

SGTL5000_CHIP_ANA_POWER,

SGTL5000_CHIP_LINREG_CTRL,

SGTL5000_CHIP_REF_CTRL,

SGTL5000_CHIP_LINE_OUT_CTRL,

SGTL5000_CHIP_SHORT_CTRL,

SGTL5000_CHIP_ANA_POWER ,

SGTL5000_CHIP_DIG_POWER,

SGTL5000_CHIP_MIC_CTRL,

SGTL5000_CHIP_LINE_OUT_VOL,

SGTL5000_CHIP_CLK_CTRL,

SGTL5000_CHIP_I2S_CTRL,

SGTL5000_CHIP_SSS_CTRL,

SGTL5000_CHIP_ANA_ADC_CTRL,

SGTL5000_CHIP_DAC_VOL,

SGTL5000_CHIP_LINE_OUT_VOL,

SGTL5000_CHIP_ANA_HP_CTRL,

SGTL5000_CHIP_ADCDAC_CTRL,

SGTL5000_CHIP_ANA_CTRL

0x7220, //SGTL5000_CHIP_ANA_POWER

0x0068, //SGTL5000_CHIP_LINREG_CTRL

0x01EE, //SGTL5000_CHIP_REF_CTRL

0x0F22, //SGTL5000_CHIP_LINE_OUT_CTRL

0x1106, //SGTL5000_CHIP_SHORT_CTRL

0x72BB, //SGTL5000_CHIP_ANA_POWER

0x0063, //SGTL5000_CHIP_DIG_POWER

0x0171, //SGTL5000_CHIP_MIC_CTRL

0x0F0F, //SGTL5000_CHIP_LINE_OUT_VOL

0x003C, //SGTL5000_CHIP_CLK_CTRL

0x0080|I2S_WORD_LENGTH, //CHIP_I2S_CTRL

0x0010, //SGTL5000_CHIP_SSS_CTRL

0x0000, //SGTL5000_CHIP_ANA_ADC_CTRL

0x3C3C, //SGTL5000_CHIP_DAC_VOL

0x0C0C, //SGTL5000_CHIP_LINE_OUT_VOL

0x1818, //SGTL5000_CHIP_ANA_HP_CTRL

0x0000, //SGTL5000_CHIP_ADCDAC_CTRL

0x0000  //SGTL5000_CHIP_ANA_CTRL

[kirankunnath]

Hai Carlos,

Thanks for your reply.

I checked the configuration you send, but did not get any data on I2S OUT.

One more thing I need to share you is that I am providing, VDDD (1.8V) source externally.

VDDA = VDDIO  = 3.3V.

Can you provide configuration details if the VDDD power supply is externally driven.

Whether the Line out and Headphone registers need to be provided if I need only the mic?

Is there any order for the registers to be given?

Please provide your valuable suggestion.

Regards,

Kiran