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Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform
3-15
Details
3.4.4.2 Mute/Mode Select (JP6)
A 3-pin jumper header (JP6) on the platform, functioning as an SPDT switch,
routes the control signal from the headphone jack to either the mute control
input pin or the mode control input pin of the evaluation module.
Set jumper JP6 to
MODE
when a separate headphone amplifier is
NOT
installed in U5
.
Set jumper JP6 to
MUTE
when a separate headphone amplifier
IS
installed in U5
.
This will cause the TPA005D12 class-D EVM to shut
down when a plug is inserted into platform headphone jack J10.
3.4.4.3 Mute/Mode Polarity Select (JP8)
A second 3-pin jumper header (JP8) on the platform selects the control signal
polarity by connecting either the active-high or the active-low line from the
headphone jack to jumper JP6.
Set jumper JP8 to
Lo
for normal class-D operation when a separate
headphone amplifier
IS
installed in U5
.