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TAS5805M: Asking for the recommendation on TAS5805 deep sleep design

SHH
Mastermind 32196 points
Part Number: TAS5805M
Other Parts Discussed in Thread: TAS5805

Hi Team,

Customer is using TAS5805 into deep sleep mode followed the d/s’s I2C commands.

 

w 58 00 00 #Go to page 0

w 58 7f 00 #Change the book to 0x00

w 58 03 02 #Change the device into Hiz Mode

w 58 03 00 #Change the device into Deep Sleep Mode

w 58 00 00 #Go to page 0

w 58 7f 00 #Change the book to 0x00

w 58 03 02 #Change the device into Hiz Mode

w 58 03 03 #Change the device into Play Mode

 

 

However, there are some abnormal noise during this change.

 

Would you please let me know if there any requirement for TAS5805 in deep sleep mode? Can customer turn off the I2S or change I2S signal?

Any sequence for reference?

 

 

 

BR,

SHH

 

  • 0
    TI__Expert 6295 points

    hello SHH,

        when you hear the noise? its happened when enter into deep sleep or when it switched from deep sleep-> plan mode?

    you can try below sequence:

    1. Deep sleep

    2. Add following script before back to play mode

      w 58 00 00

      w 58 7f 78

      w 58 00 0e

      w 58 68 00

      w 58 69 80

      w 58 70 00

      w 58 71 00

      w 58 00 03

      w 58 50 00

      w 58 51 80

      w 58 52 00

      w 58 53 00

      w 58 6c 00

      w 58 6d 80

      w 58 6e 00

      w 58 6f 00

    3. Play mode (0x03 write 03)

    regards

    Linda

  • 0 in reply to Xiaolin Qin
    TI__Mastermind 32196 points

    Hi Linda,

    Thanks for feedback. Could you please let me know where I can see these scripts in datasheet or process flow document and what the function it is?

    BR,

    SHH

  • 0 in reply to SHH
    TI__Mastermind 27540 points

    Hi SHH,

    The register map for this device is located in the datasheet in section 9.6 Register Maps.  We also go talk about the deep sleep mode in Section 9.4.5 Device State Control. 

    Hope this helps!

    Best Regards,

    Robert Clifton

  • 0 in reply to Robert Clifton56
    TI__Mastermind 32196 points

    Hi Robert,

    would you please let me know where book 78 registers detail is on datasheet?

    w 58 00 00

    w 58 7f 78

    w 58 00 0e

    BR,

    SHH

  • 0 in reply to SHH
    TI__Mastermind 27540 points

    Hi SHH,

    The expert of this device is on vacation for the rest of this week but they will be able to get back to you sometime next week!

    Regards,

    Robert Clifton

  • 0 in reply to SHH
    TI__Expert 6720 points

    Hi SHH,

    First of all, please clarify the 'abnormal noise'. Is it background noise or pop noise?

    During status switching, some time delay needs to avoid pop. What's more, in order to debug which period happening this noise, it's suggested to separate script for further check:

    1. Play to deep sleep

    w 58 00 00 #Go to page 0

    w 58 7f 00 #Change the book to 0x00

    w 58 03 02 #Change the device into Hiz Mode

    d 10 #wait at least 5ms for volume ramp down

    w 58 03 00 #Change the device into Deep Sleep Mode

    2. deep sleep to play (needs to follow datasheet 9.5.3.1 startup procedures)

    #Power / PDN / I2S are provided as datasheet requirements

    w 58 00 00 #Go to page 0

    w 58 7f 00 #Change the book to 0x00

    w 58 03 02 #Change the device into Hiz Mode

    d 10 #wait at least 5ms for volume ramp up

    w 58 03 03 #Change the device into Play Mode

    Regards,

    Matthew