Texas Instruments TPA005D02 - Manual (Page 37)

Using The TPA005D02 Class D EVM With the Plug-N-Play Platform
3-23 Details
3.3.2 Module Switches
The TPA005D02 Class D Stereo Audio Amplifier Evaluation Module is
equipped with two pushbutton switches that allow the module shutdown and
mute functions to be manually activated.
3.3.2.1 S1 — Shutdown
To have the module amplifier IC enter the shutdown mode, press the
Shutdown switch (S1) on the module. S1 connects the amplifier IC
SHUTDOWN pin to ground, forcing it into a low-power state. This function is
not controlled by a control input to the module—only by switch S1.
The shutdown mode reduces the amplifier IC current consumption to
approximately 400
µ
A compared to approximately 10 mA in the mute mode.
3.3.2.2 S2 — Mute Switch
Pushbutton switch S2 on the TPA005D02 class D EVM allows manual muting
of the amplifier IC. S2 connects the amplifier IC MUTE pin to ground, muting
the output. The EVM Mute control input pin allows control of this function by
the platform or other external circuit.