TINYSINE TSA7804B Amplifier Module

Port for external buttons:

The module incorporates 3 buttons to control volume, play/pause functions, etc. You can connect external buttons easily using the dedicated port. The pinout of this port is as follows (refer to the silkscreen on the back of the module for correspondence):

• P/P: Play / Pause button
• VOL+: Volume+ / Forward button
• VOL-: Volume- / Rewind button
• 1.8V

Activate AUX input:

The default DSP program mixes RCA and Bluetooth audio signals and transmits them to the amplifier. If you wish to manually select RCA or Bluetooth input using a switch, you can connect an external switch to this port and load a different DSP program.

Port for volume potentiometer:

You can use an external 10K potentiometer to control the volume level.

DSP programming port:

You can load a new DSP program using the TinySine USBi JTAG programmer (sold separately). he default DSP program mixes the RCA and Bluetooth inputs before redirecting them to the HP output. You can use the DSP program to make the audio source selectable using an external switch (sold separately).

Two TinySine TSA7804B modules can work together in TWS mode. The pairing controls are as follows:

• S1: Long press 3s to activate pairing mode. Long press 6s to reset pairing information.
• S1 + S2: Press 1s to activate TWS slave mode
• S1 + S3: Press 1s to activate TWS master mode
• S2 + S3: Press for 1s, to deactivate the TWS connection