TAS2552: TAS2552 WCLK setting issue

Hello Gary

My colleague has been notified about your question. The response may be delayed because he is out of the office on holiday.

Best Regards
José Luis Figueroa
Audio Applications Engineer

Hi Gary,

What is your complete register configuration? What is your clock reference and how are you dividing this clock to set the sampling rate?
The sound is distorted or there is no sound at all?

Best regards,
-Ivan Salazar
Texas Instruments

Hi IvanSalazar

The configuration is:

# 32-bit 64-fs
# Slave Reg Value
w 80 01 12
w 80 08 10
w 80 02 EA
w 80 03 5D
w 80 04 00
w 80 05 10
w 80 06 00
w 80 07 C8
w 80 09 00
w 80 0A 00
w 80 12 15
w 80 14 0F
w 80 01 10

w 80 03 5F
w 80 12 11

Hi IvanSalazar

And my next question,

I use Audio Analyzser to receive the pdm data, it shows me perfact sinewave,
But the TAS2552EVB out+ out- shows freak waveform, how to solve it?

the photos is:
mega.nz/
mega.nz/
mega.nz/

My Configuration is:
# 32-bit 64-fs
# Slave Reg Value
w 80 01 12

# BCLK
w 80 01 32

w 80 08 10
w 80 02 EA
w 80 03 5D
w 80 04 00
w 80 05 10
w 80 06 00
w 80 07 C8

# PLL_J
w 80 08 60

w 80 09 00

# PLL_D
w 80 09 2E

w 80 0A 00

# PLL_D
w 80 0A 0F

w 80 12 15
w 80 14 0F
w 80 01 10


#Audio Gain
w 80 12 0A


#============= AT PDM =============
#PDM falling edge
w 80 11 02

#IV Sense Gain Enable
w 80 13 C0

#Synchronous reset
#w 80 01 11

#VI Sense Enable
#w 80 02 EB

#PDM (Digital Input:3F, Analog Input:BF)
w 80 03 3F

Hi Tsai,

Are you using a PDM signal? or I2S? Register 0x03 should be configured to PDM or I2S, from your register settings I see it is set to I2S.
I'll keep reviewing the settings for any other possible issue.

Best regards,
-Ivan Salazar
Texas Instruments