TDA7262 Audio Amplfier's SVR/MUTING pin (pin3)
The term SVR is the "supply variation rejection" and is usually meant to refer to \$k_{SVR}=\frac{\Delta \left(V_+ - V_-\right)}{\Delta V_{IO}}\$ -- and it describes how well an opamp, for example, rejects power supply variations when considering its input offset voltage.

The term MUTING here, of course, refers to muting the output of the device.

I think they've managed to combine these two functions into one by using a capacitor. The capacitor has two behaviors: the AC behavior provides the SVR function and the DC behavior provides the muting effect.



When the voltage at the pin is close to ground, the output is muted. As the capacitor charges, it reaches a specific voltage and an internal comparator halts the muting effect. You can mute it again by just discharging the capacitor with a transistor switch, I think.