Dear all
I control STANDBY pin by MCU, but there is Boh sound from speaker when the STANDBY pin boltage get from low to high, is it normal ? If not normal, how to eliminate the Boh sound ?
Dear Kai
is the circuitry at the audio inputs entirely symmetrical? See section 9.3.1 of datasheet.
Went: Yes,as below picture, it's output signal at speaker, entirely symmetrical.
Have you tried using the MUTE input?
Went: I had set high voltage at MUTE pin.
Dear Dylan
Sorry, I had check it again,as below steps:
1. When take off the speaker, I get the 0x02 register value, it is 0x44;
2. I take on the speaker on the TAS5411-Q1 device, the 0x02 register value is same 0x44,is it normal, right?
3. I set the STANDBY pin to low voltage, then set this pin to high voltage, read the 0x02 register value again, it is 0x40 value, is it normal,right ?
4. My problem is at step 3, when I set the STANDBY pin to high voltage from low voltage , the speaker has Boh sound at the same time. I want to know why has this Boh sound ?
as below picture is 0x02 register log.
