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TAS5756M: Configuration value of Hybridflow

yoshimasa yazawa
Prodigy 100 points
Part Number: TAS5756M
Other Parts Discussed in Thread: TAS5754M

Hi.We're designing the custom PCB that TAS5756M is used(PBTL mono structure).
On our PCB, external ADC is exist to convert analog input to I2S.
We refferd the datasheet of TAS5754M and its register map,configured the configration value that needed(e.g. each clock of I2S) via I2C.
We already could get speaker output from TAS5756M.

Now, we wanna add low pass filter function of Hybridflow to it.
Currently, we don't need other function except the filter.
According to the User's guide, We're guessing that we need apply the Hybridflow4 to our application.

When we set the setting on "Biquad" tab and click green arrow button to run hybridflow on purepath console2 window, then we can get enormous data on the log window.
(we attach the log file here)

4010.log.txt 
# -----------------------------
# LOG START  Tue Sep 15 17:19:23 2020

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w 9a 00 2e 
w 9a 60 fd b9 4b 00 16 02 51 00 00 06 d3 00 
w 9a 10 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 00 2c 
w 9a 01 05 
w 9a 44 59 0c dc 00 a6 f3 24 00 59 0c dc 00 55 86 e0 00 c6 da 50 00 
w 9a 1c 03 85 fc 00 03 85 fc 00 03 85 fc 00 55 86 e0 00 c6 da 50 00 
w 9a 30 78 03 81 00 87 fc 7f 00 78 03 81 00 77 e2 94 00 8f b7 23 00 
w 9a 58 7f ff ff 00 
w 9a 5c 80 00 01 00 
w 9a 60 7f ff ff 00 
w 9a 08 00 20 ed 00 00 20 ed 00 00 20 ed 00 77 e2 94 00 8f b7 23 00 
w 9a 00 2e 
w 9a 60 fd b9 4b 00 16 02 51 00 00 06 d3 00 
w 9a 10 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 24 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 38 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 4c 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 00 32 
w 9a 34 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 48 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 5c 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 70 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 00 33 
w 9a 08 00 00 00 00 
w 9a 00 2c 
w 9a 6c 7f aa 6f 00 c0 2a c9 00 00 00 00 00 3f aa 6f 00 00 00 00 00 
w 9a 01 05 
w 9a 00 2e 
w 9a 24 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 38 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 4c 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 00 32 
w 9a 34 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 48 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 5c 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 70 7f ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 
w 9a 00 33 
w 9a 08 00 00 00 00 
w 9a 00 2c 
w 9a 6c 7f aa 6f 00 c0 2a c9 00 00 00 00 00 3f aa 6f 00 00 00 00 00 
w 9a 00 2d 
w 9a 08 01 a7 6a 00 00 d3 b5 00 00 00 00 00 3e 58 96 00 00 00 00 00 
w 9a 00 34 
w 9a 44 40 00 00 00 
w 9a 00 33 
w 9a 6c 00 00 00 00 7f ff ff 00 
w 9a 00 2d 
w 9a 1c 00 00 00 00 
w 9a 20 7f db 83 00 80 48 ed 00 3f ed c3 00 c0 12 3d 00 3f ed c3 00 7f d9 5e 00 80 4d 38 00 3f ec b0 00 c0 21 92 00 3f d0 2c 00 7f a5 03 00 80 b5 7a 00 00 00 10 00 00 00 10 00 00 00 10 00 7f 7e d1 00 81 00 5a 00 00 00 40 00 00 00 40 00 00 00 40 00 3f 7f d3 00 00 00 00 00 00 40 17 00 00 20 0b 00 
w 9a 00 2e 
w 9a 08 00 00 00 00 
w 9a 00 2c 
w 9a 01 05 
w 9a 00 2d 
w 9a 08 01 a7 6a 00 00 d3 b5 00 00 00 00 00 3e 58 96 00 00 00 00 00 
w 9a 00 34 
w 9a 44 40 00 00 00 
w 9a 00 33 
w 9a 6c 00 00 00 00 7f ff ff 00 
w 9a 00 2d 
w 9a 1c 00 00 00 00 
w 9a 20 7f db 83 00 80 48 ed 00 3f ed c3 00 c0 12 3d 00 3f ed c3 00 7f d9 5e 00 80 4d 38 00 3f ec b0 00 c0 21 92 00 3f d0 2c 00 7f a5 03 00 80 b5 7a 00 00 00 10 00 00 00 10 00 00 00 10 00 7f 7e d1 00 81 00 5a 00 00 00 40 00 00 00 40 00 00 00 40 00 3f 7f d3 00 00 00 00 00 00 40 17 00 00 20 0b 00 
w 9a 00 2e 
w 9a 08 00 00 00 00 
w 9a 00 34 
w 9a 34 40 00 00 00 00 04 00 00 
w 9a 00 33 
w 9a 1c 40 00 00 00 40 00 00 00 
w 9a 00 00 
w 9a 03 00 
w 9a 00 2c 
w 9a 01 05 
w 9a 00 34 
w 9a 34 40 00 00 00 00 04 00 00 
w 9a 00 33 
w 9a 1c 40 00 00 00 40 00 00 00 
w 98 00 00 
w 9a 00 00


From where to where is the Hybridflow's configuration value??

According to below thread in the past...

https://e2e.ti.com/support/audio/f/6/t/507640?tisearch=e2e-sitesearch&keymatch=Hybridflow

We can get the filters parameter's value on the log window when we configure the filter during Hybridflow is running.
It was below parameter we got as example(Pre-DBE,ButterWorth 2, fc=1600Hz).

w 9a 00 33
w 9a 30 01 38 22 00 01 38 22 00 01 38 22 00 6d 27 39 00 a0 d1 04 00
w 9a 00 2c
w 9a 01 05
w 9a 00 33
w 9a 30 01 38 22 00 01 38 22 00 01 38 22 00 6d 27 39 00 a0 d1 04 00
w 9a 00 00


But we need to set other some register's value also?

On the datasheet of TAS5754M, there are not mentioned about the register about hybridflow.

Can anybody tell us about minimum required configuration part from our log to use only filter of hybridflow4?

Thank you.

  • 0
    TI__Expert 6720 points

    Hi,

    Could you provide current manual configuration file (successful output with TAS5756M)? Our suggestion is to add correct biquad script (refer E2E threshold) into your current simple startup configuration.

    Regards 

  • 0 in reply to Matthew Miao
    Prodigy 100 points

    Hi. Matthew.

    Here is our currently setting.

    TAS6756M_I2CsettingSnippet.c 
    /*
  I2C setting snippet 
  "subaddr" is the I2C address of TAS5756M on our custom board.
  The first argument is the register address,and the second argument is the setting value.
*/

	i2c_write_da( subaddr,  0,  0x00 );//[P0-R0]   Page0 Set     
	i2c_write_da( subaddr,  2,  0x10 );//[P0-R2]   Standby Request
	i2c_write_da( subaddr,  1,  0x11 );//[P0-R1]   Reset modules
       
	i2c_write_da( subaddr,  2,  0    );//[P0-R2]   Stop Standby
	i2c_write_da( subaddr,  4,  0    );//[P0-R4]   Disable PLL

	i2c_write_da( subaddr,  0,  253  );//[P0-R0] Page 0 -> 253
	i2c_write_da( subaddr,  63, 0x11 );//[P253-R63]Clock Flex Register 1 (From PCM5242 Value)
	i2c_write_da( subaddr,  64, 0xFF );//[P253-R64]Clock Flex Register 2 (From PCM5242 Value) 

	i2c_write_da( subaddr,  0,  0    );//[   R0]  Page 253 -> 0
    
    //1MHz -> 24.576MHz setting
    i2c_write_da( subaddr,  20, 0    );//[P0-R20]  Set PLL P 
	i2c_write_da( subaddr,  21, 7    );//[P0-R21]  Set PLL J   
	i2c_write_da( subaddr,  22, 0x0  );//[P0-R22]  Set PLL D(Upper 6bits)
	i2c_write_da( subaddr,  23, 0x0  );//[P0-R22]  Set PLL D(Lower 6bits)   
	i2c_write_da( subaddr,  24, 13   );//[P0-R24]  Set PLL R 
    
	i2c_write_da( subaddr,  8,  0x24 );//[P0-R8 ]  Select GPIO0 as Input, GPIO2 as Output
	i2c_write_da( subaddr,  85, 0x10 );//[P0-R82]  SelectPLL Output/4 for GPIO2 Output    
	i2c_write_da( subaddr,  18, 3    );//[P0-R18]  Select GPIO0 as clock input source        
	i2c_write_da( subaddr,  13, 0x30 );//[P0-R13]  Set PLL Reference clock to GPIO   
	i2c_write_da( subaddr,  4,  0x1  );//[P0-R4 ]  Enable PLL 

    //I2S clock setting
	i2c_write_da( subaddr,  40, 0x02 );//[P0-R40]  Set Serial interface as 24 bit I2S
	i2c_write_da( subaddr,  14, 0x10 );//[P0-R14]  Select PLL for DAC clock source
           
	i2c_write_da( subaddr,  12, 0x7C );//[P0-R12]  Reset SCLK and LRCK drivers
	i2c_write_da( subaddr,  9,  0x11 );//[P0-R9 ]  Set SCLK and LRCK as Outputs

	//SCLK & LRCLK setting(When MCLK = 24.576MHz)
	i2c_write_da( subaddr,  32, 7    );//[P0-R32]  Set SCLK =  MCK/8 = 3.072MHz    
	i2c_write_da( subaddr,  33, 63   );//[P0-R33]  Set LRCLK = SCLK/64 = 48kHz
    
    //Set Channel
  	i2c_write_da( subaddr,  42, 0x01 );//[P0-R42]  Channel A/B Data Path setting
    
	i2c_write_da( subaddr,  12, 0x7F );//[P0-R12]  Enable SCLK and LRCK

    This is code snippet rather than configuration file...

    On our custom board, TAS5756M is generate I2S clock  as I2S master. (generated from 1MHz clock generated from MCU.)
    And the external ADC is receiving these I2S clock as I2S slave.

    These configuration value is we calculated or refer from datasheet, and it includes the value from information of the TI forum.

    Can you give us some advice to help us?

    And...
    In above my post, I mentioned in about the configuration value that we can get from the log window.
    But should I refer the .cfg file that dumped from PPC2?

    here is the .cfg file that we dumped.

    PreDBE_LowPassBW2x3.cfg

    Either way, configuration are huge volume.
    Can you teach us about minimum configuration to apply the setting of HybridFlow's filter?

    Thank you.

  • 0 in reply to yoshimasa yazawa
    TI__Genius 14630 points

    Hello Yoshimasa,

    Are you using all the features in your Hybrid Flow configuration. Typically we recommend using the cfg file dump from purepath console. Are you trying to minimize the number of unnecessary I2C transactions?

    Can you provide your PPC2 Setting files for both the overall configuration and the biquad settings.

    Best Regards,

    Luis