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Original question:

TLV320DAC3120: Generation of 1 kHz beep 1 second from 8 kHz DAC fs

TLV320DAC3120: Generation of 2kHz tone beep for 2 seconds ,Fs=44.1Khz, Fin=2kHz.

zanza bhatt
Prodigy 80 points
Part Number: TLV320DAC3120
Other Parts Discussed in Thread: TLV320AIC3120,

hi,

I am trying to generate beep of 2KHz for 2sec, but i am not getting the beep for 2sec it is less than the time expected.

My second question is that, although i have changed volume setting , I am not getting loud enough beep.

this is the setting configuration.

can you help me out for the same   

Select Page 0
w 30 00 00
# PLL_CLKIN = MCLK, CODEC_CLKIN = MCLK
# MCLK=2,048000Hz
w 30 04 00
# DAC Instruction set PRB_P25
w 30 3C 19

# NDAC ON div=1
w 30 0B 81
# MDAC ON div=2
w 30 0C 82
# DOSR = 128
w 30 0D  00
w 30 0E  80

# DAC Volume -63.5 dB
w 30 41 81

# Select Page 0
w 30 00 00
# DAC mute off
w 30 40 04
# DAC power up
w 30 3F 80

# Select Page 1
w 30 00 01
# Class d driver power up
w 30 20 86
# Class D route enable
w 30 26 95
# Class D output driver mute off 
w 30 2A 04

# Select Page 0
w 30 00 00

# Beep length=017700
w 30 49 01
w 30 4A 77
w 30 4B 00
# sin wave coff=23FB
w 30 4C 23
w 30 4D FB
# cos wave coff=7AD7
w 30 4E 7A
w 30 4F D7
# Beep generate -2dB
w 30 47 84

Thanks,

Zanza Bhatt

  • 0
    TI__Guru** 108685 points
    Hi Zanza,

    Welcome to e2e.
    Only the time is less that the expected? Is the beep signal frequency correct?
    You took the example values from the following app note, right? www.ti.com/.../slaa446.pdf

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 80 points

    Hi Ivan,

    Yes I have taken example from app note, but I have tried few other frequencies as well. But I am not getting the desired beep(not long enough).

    and speaker is giving the faintest click, evan I have changed volume control register. But the sound is not audible.

    so can you help me. I am not using I2S. I am using TLV320AIC3120  for beep generation only.

    Is there any other setting  required. Please help me for the same.

    Thanks,

    Zanza Bhatt

  • 0 in reply to zanza bhatt
    TI__Guru** 108685 points
    Zanza,

    I assume you're using the TLV320DAC3120 EVM right? Could you try the following script? I think it should work better:


    #Select Page 0
    w 30 00 00
    # Reset
    w 30 01 01

    #########################################
    # PLL_clkin = BCLK,codec_clkin = PLL_CLK
    w 30 04 07
    > 91
    > 20
    > 00
    > 00
    # NDAC is powered up and set to 4
    w 30 0b 84
    # MDAC is powered up and set to 4
    > 84
    # DOSR = 128, DOSR(9:8) = 0
    > 00
    # DOSR(7:0) = 128
    > 80
    #########################################

    # DAC Instruction set PRB_P25
    w 30 3C 19

    # DAC Volume 0 dB
    w 30 41 00

    # Select Page 0
    w 30 00 00
    # DAC mute off
    w 30 40 04
    # DAC power up
    w 30 3F 80

    # Select Page 1
    w 30 00 01
    # Class d driver power up
    w 30 20 86
    # DAC routed to mixer amp
    w 30 23 40
    # Class D route enable
    w 30 26 00
    # Class D output driver mute off
    w 30 2A 04

    # Select Page 0
    w 30 00 00

    # Beep length=017700
    w 30 49 01
    w 30 4A 77
    w 30 4B 00
    # sin wave coff=23FB
    w 30 4C 23
    w 30 4D FB
    # cos wave coff=7AD7
    w 30 4E 7A
    w 30 4F D7

    # Beep generate -2dB
    w 30 47 84


    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 80 points

    hi Ivan,

    sorry it was typing mistake , I am not using  TLV320DAC3120  but

    using TLV320AIC3120 EVM

    thanks,

    zanza 

  • 0 in reply to zanza bhatt
    TI__Guru** 108685 points
    Zanza,

    There would be not great changes in the device configuration as long as the ADC is not being used.
    Have you tried the script I shared before, anyway? Did it work fine?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    TI__Guru** 108685 points
    Hi Zanza,

    Is there any update on this? Do you need further support?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 80 points

    Hi ivan,

    Thanks this resolved my issue

    Thank you,

    zanza