TAS5705 external I2S without MCLK

Aneli Jow

Other Parts Discussed in Thread: TAS5705, TAS5707, TAS5711, TAS5717, TAS5709

Dear Sir,

Is it possible to connect the TAS5707 with external I2S source which don't have MCLK. Base on the datasheet of TAS5705, TAS5707 can generate the internal clock. It should be possible, right?

over 12 years ago

0 Don Dapkus over 12 years ago

TI__Guru**** 189399 points

Hi, Aneli,

Sorry the d/s is a little unclear on that.

What happens is the I2C continues to work, but the audio is muted until a valid MCLK is applied to the device.

-d2

0 Aneli Jow over 12 years ago in reply to Don Dapkus

Prodigy 40 points

Dear Don,

Thanks for your quick answer.

The audio source of my design can generate the MCLK meet the requirement of TAS5705.

Is there any TI's I2S digital Amplifier can generate the MCLK by itself.

0 Tuan over 12 years ago in reply to Aneli Jow

TI__Mastermind 33420 points

Hello Aneli:

The newer devices like TAS5709, TAS5711, TAS5717 can operate with MCLK setting of 64*Fs. This means that you can route on the PCB SCLK to both SCLK pin and MCLK pin. This configuration is valid for Fs of 44.1 and 48 kHz. This configuration does not support lower Fs.

Hope this helps.

Best regards,

Tuan

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TAS5705 external I2S without MCLK