Texas Instruments TPA0242 - Manual (Page 29)

Using The TPA0242 EVM With the Plug-N-Play Evaluation Platform
3-13 Details
3.3.4.2 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 shutdown
control input pin or the mode control input pin of the evaluation module.
J To shut down the TPA0242 amplifier module using the control signal
from the platform headphone jack, jumper JP6 to
MUTE
J To switch the output mode of the TPA0242 amplifier between BTL and
single-ended using the control signal from the platform headphone
jack, jumper JP6 to
MODE
3.3.4.3 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.
- When JP6 is set to Mute, use the following JP8 settings for the TPA0242:
J To shut down the TPA0242 amplifier module when a plug is inserted
into the headphone jack, jumper JP8 to Lo (this is the typical setting).
J To shut down the TPA0242 amplifier module until a plug is inserted
into the headphone jack, jumper JP8 to Hi.
- When JP6 is set to Mode, use the following JP8 settings for the TPA0242:
J To switch the TPA0242 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).
J To switch the TPA0242 amplifier module to the BTL output mode when
a plug is inserted into the headphone jack, jumper JP8 to Lo.