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TAS5711 / 2.1 SE BTL-AD mode / register 0x25

Arne Wörner
Prodigy 130 points
Other Parts Discussed in Thread: TAS5711

Hi!

It seems like I have to set register 0x25 to 0x01012345.

Or can I just connect

1. the left speaker to OUT_A

2. the right speaker to OUT_C and

3. the sub woofer to OUT_B and OUT_D?

The datasheet wasnt so clear about it,

but it sounds much better with 0x25=0x01012345 instead of the default (0x01021345)

and the left+right volume things work fine. *yay* :-)

Thx.

Bye

Arne

  • 0
    TI__Mastermind 22965 points

    Hi Arne,

    You can also try the attached I2C script. (Ch-AB BTL, Ch-C, Ch-D SE)

    http://e2e.ti.com/cfs-file.ashx/__key/communityserver-discussions-components-files/6/5187.TAS5711_5F00_AD_5F00_2p1ch_5F00_SE2BTL1.ini

    -Ravi

  • 0 in reply to Ravi Singh
    Prodigy 130 points

    Hi Ravi,

    Thank u for ur reply.

    Somehow Figure 51 of the datasheet of the TAS5711 looks like this to me:
    CH1_audio ==> PWM1 ==> OUT_A
    CH2_audio ==> PWM2 ==> OUT_B
    CH3_audio ==> PWM3(negated)&PWM4 ==> OUT_C&OUT_D

    In ur I2C script u route
    PWM1 to OUT_A
    PWM2 to OUT_B
    PWM4 to OUT_C and
    PWM3 to OUT_D,
    which means
    Left (CH1_audio) (SE) comes out of OUT_A
    Right (CH2_audio) (SE) comes out of OUT_B and
    Subwoofer (CH3_audio) (BTL) comes out of OUT_D&OUT_C. 
    Right?
    I m puzzled because: u say Ch-C/Ch-D (do u mean OUT_C/OUT_D?) is SE, although its connected to PWM3/PWM4, which is connected to CH3_audio (BTL).
    Whose IC delay channel value should be zero? The SE related channels or the BTL related channels?

    Thx.

    Bye

    Arne