TSA1452B Bluetooth + DSP Audio Receiver Board

TSA1452B is an enhanced Bluetooth + DSP board with an AudioB I2S v3 module that supports Apt-X. It can be powered by a USB-C cable or any DC9V-30V power supply. You can pair it with a mobile phone or a computer (etc). Power the board, use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA1452B". You don't need a PIN, pair it and then you can play music. 

The TSA1452B is a complete audio digital signal processing module. The main DSP chip on this module is ADAU1452. The application range from active loudspeaker concepts (digital 3 way 3 unit, 2 way 2 unit crossover, bass enhancement, etc.) and realize the transformation from 2.0 to 2.1. It has four potentiometers and with default program loaded. Customers can adjust the gain, bass, midrange and treble. It also has a debug port for Sigima Studio, and users can program this module with our USBi programmer to get more functions that include equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, etc.

 

How to use:

TWS firmware (single board)

1. Power up TSA1452, red LED slow blink then red and blue LED flash alternately.
2. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA1452", connect it. Blue LED flash.
3. You can play the music now.

 

TWS connection (2 boards can connected together)

• Master board

1. Power up TSA1452, red LED slow blink then red and blue LED flash alternately.
2. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA1452", connect it. Blue LED flash.
3. You can play the music now. If you only use one amplifier board, you don't need do the following steps.
4. Long press S1+S3 button for 1 second, board into TWS master mode. Red and blue LED flash alternately.

 

• Slave board

1. Power up another TSA1452, red LED slow blink then red and blue LED flash alternately.
2. Long press S1+S2 button for 1 second, board into TWS slave mode. Red and blue LED flash alternately.
3. The master board will auto searching (30 seconds) slave board. Both master and slave board will be connected.
4. The slave board will have music out now.
5. If you want to disconnect TWS connection, long press S2+S3 button for 1 second to disconnect TWS connection.

 

Party firmware (single board)

1. Power up TSA1452, blue LED flash 3 times per cycle.
2. Double click S3 button, TSA1452 into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
3. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA1452", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
4. You can play the music now.

 

Party connection (multi boards can connected together)

• Transmitter board

1. Power up TSA1452, blue LED flash 3 times per cycle.
2. Double click S3 button, TSA1452 into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
3. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA1452", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
4. You can play the music now. If you only use one amplifier board. You don't need do the following steps.
5. Press S2 button, board into transmitter mode.(Voice: Broadcast mode)

 

• Receiver board

1. Power up another TSA1452, blue LED flash 3 times per cycle.
2. Press S3 button, board into receiver mode.(Voice: Broadcast audio enabled)
3. Double click S2 button on transmitter board, double click S3 button on receiver board, the transmitter board will auto searching (30 seconds) receiver board. Both transmitter and receiver board will be connected.
4. The receiver board will have music out now.
5. If a new TSA1452 want to join as receiver board, repeat step1~step3 on the new TSA1452 board.
6. If a receiver board wants to quit, click S2 button on that board to set it into transmitter mode.

 

Pins define:

Port name	Pin name	Direction	Description
TOSLINK Input	SPDIFIN	input
TOSLINK Output	SPDIFOUT	output
External Potentiometers port	ADC0	input	Gain control
	ADC1	input	Treble control
	ADC2	input	Midrange control
	ADC3	input	Bass control
Line in 1	BCLK_IN0	input
	LRCLK_IN0	input
	SDATA_IN0	input
Line in 2	BCLK_IN1	input
	LRCLK_IN1	input
	SDATA_IN1	input
I2S input	BCLK_IN2	input
	LRCLK_IN2	input
	SDATA_IN2	input
Bluetooth input	BCLK_IN3	input
	LRCLK_IN3	input
	SDATA_IN3	input
Line out 1	LRCLK_OUT3	output
	BCLK_OUT3	output
	SDATA_OUT3	output
Line out 2	LRCLK_OUT2	output
	BCLK_OUT2	output
	SDATA_OUT2	output
I2S out 1	LRCLK_OUT1	output
	BCLK_OUT1	output
	SDATA_OUT1	output
I2S out 2	LRCLK_OUT0	output
	BCLK_OUT0	output
	SDATA_OUT0	output

 

Control buttons:

There are 3 buttons on the board, they have different functions in TWS and Party firmware:

TWS firmware

• Play/Pause: Play/pause music
• Rewind/Vol-: long press decrease volume, short click to play the previous song
• Forward/Vol+: long press increase volume, short click to play the next song

 

Party firmware

• Pair: double click board into paring mode
• TX: single cilck board into transmitter mode; double click to searching receiver board
• RX: single click board into receiver mode; double to searching transmitter board

 

Pins define:(Check the board backside silkscreen):

You can also connect our Panel Mount Buttons Kit for Amplifier to TSA1452's external buttons port, it works same as buttons on the board.

Potentiometers port:

You can connect external POTs (5K~20K) to control the Main volume, treble, middle, Bass. This is our POT kit

1. ADC0- Main volume.
2. ADC1- Bass volume.
3. ADC2- Middle volume.
4. ADC3- treble volume.

Warning: You need to disconnect the soldering pads on the board back side when you connect external potentiometers. Or the ADC port may be burned. Potentiometers value: 1Kohm-100Kohm.

 

DSP programming port:

TSA1452's DSP detects both Bluetooth signal and Line in signal, but the default program makes Bluetooth has higher prority. If Bluetooth signal is detected, TSA1452 will output Bluetooth audio source, otherwise it will output Line in audio source. You can develop DSP program to fulfill your requirement, then load the new DSP program by using USBi JTAG Sigma DSP programmer.

 

 

TSA1452B works with stereo amplifier board

 

Features:

• Size: 11cm x 7.5cm x1.5cm
• Powerful Digital Audio Processor Up to 294.912 MHz, 32-bit SigmaDSP core at 1.2 V
• Analog audio out output level: 0.9Vrms
• Analog audio input signal range: 2Vrms
• Input resistance: 20Kohm
• Fully Programmable with SigmaStudio Graphical tool
• 5V type C USB or DC9-30V Power input
• Bluetooth 5.1
• I2S Sampling Rate: 48KHz
• I2S logic level: 3.3V
• TWS firmware: aptX, aptX-HD, SBC and AAC
• Party mode firmware: SBC
• ADAU DSP integrated
• TWS or Multi-point connection
• Up to 100 boards can be linked together.(Party firmware)
• Effective transmission distance: 80-100m

 

Documents:

• ADI SigmaStudio software
• Default Bluetooth firmware (TWS)
• Default Bluetooth firmware (Party mode)
• How to write DSP program to DSP board
• How to change the Bluetooth name
• How to enable the PIN code
• TWS pairing video tutorial
• Party mode pairing video tutorial

 

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