TLV320AIC3120: No audio output

zanza bhatt

Prodigy 80 points

Part Number: TLV320AIC3120

Hi ,

I am t using TLV320AIC3120,

but I am getting faint click sound which is hardly audible, but I need longer beep sound.

I need this EVM for BEEP generation only, I am not using I2S, just configuring Registers with I2C,

Configuration which i have done is written below

can you help me out on this,



#Select Page 0
w 30 00 00
# PLL_CLKIN = MCLK, CODEC_CLKIN = MCLK
######## MCLK=1 MHz
w 30 04 03 & #0x07
# r=1,p=1;
w 30 05 92
# j=32
w 06 10
# D=0
w 07 00
w 08 00

# DAC Instruction set PRB_P25
w 30 3C 19



# NDAC ON div=1
w 30 0B 82
# MDAC ON div=2
w 30 0C 84
# DOSR = 144
w 30 0D  00
w 30 0E  90

# DAC Volume -0 dB
w 30 41 30

# DAC mute off
w 30 40 04
# DAC power up
w 30 3F 80
w 30 24 00
w 30 25 90


# 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 1C

####Fs=50 Khz, Fin=1kHz.

# Select Page 0
w 30 00 00

# Beep length=004E20
w 30 49 00
w 30 4A 4E
w 30 4B 20
# sin wave coeffi=1008
w 30 4C 10
w 30 4D 08
# cos wave coeffi=7EFD
w 30 4E 7E
w 30 4F FD
# Beep generate  0 db
w 30 47 80






Thanks,
Zanza

over 5 years ago

0 Steve-Wilson over 5 years ago

TI__Mastermind 30030 points

Zanza,

Redo the PLL and Divider settings, Processing block 25 is a resource heavy process flow. The resource class is 12.

typically you should have it set up so MDAC * DOSR / 32 ≥ RC right now that is not the case for you.

Are you providing any BCLK or wCLK at all?

best regards,
-Steve Wilson

0 zanza bhatt over 5 years ago in reply to Steve-Wilson

Prodigy 80 points

Hi Steve,
I have done this changes in pLL division
# PLL_CLKIN = MCLK, CODEC_CLKIN = MCLK
######## MCLK=1 MHz
w 30 04 03
# r=1,p=1;
w 30 05 91
# j=48
w 06 30
# D=0
w 07 00
w 08 00

# NDAC ON div=1
w 30 0B 82
# MDAC ON div=2
w 30 0C 84
# DOSR = 128
w 30 0D 00
w 30 0E 80

And I am using MCLK as PLL clk not providing any BCLK or wCLK .

Thanks,
Zanza

0 Steve-Wilson over 5 years ago in reply to zanza bhatt

TI__Mastermind 30030 points

Zanza,

you will need to provide a few bclk cycles at the very least. I recommend running the device in master mode (set BCLK and WCLK to outputs)

This will provide the kickstart the internal processing block needs to run.

best regards,
-Steve Wilson

Audio

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TLV320AIC3120: No audio output