TAS2505-Q1: How to set the Echo Cancellation

Ernest Cho

Expert 3121 points

Part Number: TAS2505-Q1
Other Parts Discussed in Thread: TAS2505

Tool/software:

Hi team,

I would like to know how to setup the registers of TAS2505-Q1 for AEC(Acoustic Echo cancellation) purpose.

I think I need to set up the DOUT pin or alternative pin setup to make path for a given DIN.

Would you guide me?

Best Regards,
Ernest Cho

4 months ago

0 Kevin Lu 4 months ago

TI__Intellectual 2540 points

Hi Ernest,

The DOUT is configured by GPIO, but the DOUT doesn't support to echo the audio-out checked from the registers map. This application is negative

Thanks

Kevin

0 Ernest Cho 4 months ago in reply to Kevin Lu

TI__Expert 3121 points

Hi Kevin,

Thanks for your feedback.

I've guided to the customer that TAS2505 do not have echo-cancellation feature, but customer wants to know how to bypass the DOUT(or other alternative pins) from the DIN.

Is this also negative?

Thanks
Ernest

0 Kevin Lu 4 months ago in reply to Ernest Cho

TI__Intellectual 2540 points

Yes, it's negative, but I think they can use the input audio to achieve it at software level.

Kevin

0 Ernest Cho 4 months ago in reply to Kevin Lu

TI__Expert 3121 points

I've seen the Application Reference Guide(https://www.ti.com/lit/pdf/slau472 ) and this has register sets.

For below set might bypass the DIN to the DOUT, is it correct?

- Page0 / Register 53 D3:D1 set to b’010 (= bit 010)
- Page0 / Register 52 D5:D2 set to b’1110

Ernest

0 Kevin Lu 4 months ago in reply to Ernest Cho

TI__Intellectual 2540 points

No, that's GPO configured by Reg0x53 D0, it can't bypass DIN

Kevin

0 Ernest Cho 4 months ago in reply to Kevin Lu

TI__Expert 3121 points

Is there no way to bypass DIN to DOUT in the TAS2505?

+1 Kevin Lu 4 months ago in reply to Ernest Cho

TI__Intellectual 2540 points

Hi Ernest,

The DIN input can loopback to secondary data output, but it requires to enable secondary audio interface.

Kevin

0 Ernest Cho 4 months ago in reply to Kevin Lu

TI__Expert 3121 points

Kevin, Thanks,

Kevin Lu said:
but it requires to enable secondary audio interface.

What command sequences are needed to enable the secondary audio interface?

Ernest

+1 Kevin Lu 4 months ago in reply to Ernest Cho

TI__Intellectual 2540 points

Hi Ernest,

It requires to multiple some pins as the secondary audio interface pin, and needs modification in schematic, you can check below contents from reference guide about how to enable secondary interface.