Texas Instruments TPA0242 manual 2.1 S1 Ð Shutdown Switch, 2.2 S3 Ð Output Mode Jumper

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Using The TPA0242 EVM With the Plug-N-Play Evaluation Platform

3.3.2.1S1 Ð Shutdown Switch

Pushbutton switch S1 on the EVM allows the manual shutdown of the TPA0242 amplifier IC.

3.3.2.2S3 Ð Output Mode Jumper

To keep the module amplifier IC in the single-ended output mode regardless of the module control input state, set jumper S3 to ON.

Jumper S3 connects the SE/BTL output mode control input pin on the amplifier IC directly to VDD, so that when S3 is ON, the IC is held in the single-ended

output mode regardless of the state of the SE/BTL module control input. When S3 is OFF, a pulldown resistor on the module holds the IC output mode control input pin low, keeping the IC in the BTL output mode.

The TPA0242 amplifier IC has two separate inputs for each channel. An internal multiplexor selects which input will be connected to the amplifier based on the state of the SE/BTL pin on the IC.

3.3.2.3S3 Ð Input Mode Jumper

To force the module amplifier IC to use the HP input regardless of the module control input state, set jumper S3 to ON.

Jumper S3 connects the HP/LINE input mode control pin on the amplifier IC directly to VDD, so that when S3 is ON, the IC is held in the HP input mode re-

gardless of the state of the HP/LINE module control input. When S3 is OFF, a pulldown resistor on the module holds the IC input control mode input pin low, allowing the IC to use the LINE inputs as the source of an input signal.

3.3.2.4S4 Ð Input and Output Mode Jumper

To force the module amplifier IC to use the HP input when in SE output mode and to use the LINE input when in BTL output mode, set jumper S4 to ON.

When jumper S4 is ON, the HP/LINE input mode control pin on the amplifier IC and the SE/BTL output mode control pin on the amplifier IC are shorted to- gether so that both the input and output multiplexors switch simultaneously. When S4 is OFF, the input and output modes may be switched independently of each other.

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Details

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Contents Users Guide Important Notice Preface Related Documentation From Texas InstrumentsPage Contents Figures TablesIntroduction Feature Highlights TPA0242 EVM Specifications DescriptionIntroduction ±2. Typical TPA0242 EVM Jumper Settings Quick StartPrecautions ±1. Quick Start Platform Map±3. Platform Jumper and Switch Settings for the TPA0242 Quick Start List for Platform±4. Typical TPA0242 EVM Jumper Settings ±2. Module PreparationQuick Start List for Stand-Alone ±3. Quick Start Module MapControl inputs Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform TPA0242 Audio Power Amplifier Evaluation Module ±2. TPA0242 EVM±3. TPA0242 EVM Schematic Diagram 1 TPA0242 Audio Amplifier IC±4. TPA0242 Amplifier IC Inputs and Gain±1. TPA0242 EVM BTL Volume Settings Differential InputSingle-Ended Operation Depop CircuitryBTL Operation EVM Removal Installing and Removing EVM BoardsEVM Insertion 2 TPA0242 Module Jumper Settings and Switches ±5. TPA0242 EVM Jumpers and Switches2.3 S3 Ð Input Mode Jumper 2.1 S1 Ð Shutdown Switch2.2 S3 Ð Output Mode Jumper 2.4 S4 Ð Input and Output Mode JumperHeadphone Output Jack Signal RoutingSignal Conditioning Headphone Jack Control Signals Mute Shutdown/ModeMute/Mode Select JP6 Mute/Mode Polarity Select JP8Power Requirements Outputs Inputs and OutputsInputs 1 TPA0242 EVM Connected for BTL Output Using The TPA0242 EVM Stand-Alone±2. Typical TPA0242 EVM Jumper Settings for BTL Stand-Alone 2 TPA0242 EVM Connected for Single-Ended Output ±10. TPA0242 EVM Connected for Stereo Single-Ended OutputTPA0242 Audio Power Amplifier Evaluation Module Parts List ±4. TPA0242 EVM Parts List