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Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform
3-9
Details
3.3.3.2 Mute/Mode Select (JP6)
A 3-pin jumper header (JP6) on the platform, functioning as a 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.
To mute the TPA311 MSOP amplifier module using the control signal
from the platform headphone jack, jumper JP6 to MUTE.
To switch the output mode of the TPA311 amplifier between BTL and
single-ended using the control signal from the platform headphone
jack, jumper JP6 to MODE.
3.3.3.3 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.
When JP6 is set to mute, use the following JP8 settings for the TPA311:
To mute the TPA311 MSOP amplifier module when a plug is inserted
into the headphone jack, jumper JP8 to Hi (this is the typical setting).
To mute the TPA311 MSOP amplifier module until a plug is inserted
into the headphone jack, jumper JP8 to Lo.
When JP6 is set to mode, use the following JP8 settings for the TPA311:
To switch the TPA311 MSOP amplifier module to the single-ended
output mode when a plug is inserted into the headphone jack, jumper
JP8 to Hi (this is the typical setting).
To switch the TPA311 MSOP amplifier module to the BTL output mode
when a plug is inserted into the headphone jack, jumper JP8 to Lo.