EWT104-DA10 Bluetooth Audio Module Development Board integrates multiple hardware interfaces easy development and use
[Interface]：TYPE-C
[Size]：92.5*84.5mm
[Weight]：37.5±0.1g
[Introduction]：The EWT104-DA10 Bluetooth module development board is a complete set of test products for the EWM104-BT5125(xxx) series audio Bluetooth modules, which is provided for customer testing and development, greatly reducing the difficulty of customer testing and development. This manual describes how to use the test board. For more details about EWM104-BT5125(xxx), please refer to the EWM104-BT5125(xxx) user manual.
| Serial number | definition | Functional Description |
| 1 | USB IN | 5V power supply for the baseboard, USB port for connecting to EWM104-BT5125 series modules |
| 2 | Battery Connector | Battery input port, connected to VBAT of EWM104-BT5125 |
| 3 | Power switch | The main power switch on the bottom board, turn it to 0N to turn on the power, and turn it to 0FF to turn off the power |
| 4 | Baseboard power supply mode selection switch | Switch the power supply mode of the resources on the baseboard. Toggle to 5V to use USB to power the baseboard resources. Toggle to BAT to use batteries to power the baseboard resources. |
| 5 | KEY_SYS_CTRL | The default is module power on/off control, user programmable |
| 6 | KEY_RESET | Module reset control button, press to reset |
| 7 | KEY_PI02 | Default is module play/volume plus button, user programmable |
| 8 | KEY_PIO3 | The default is the module pause/play/volume down button, which can be programmed by the user |
| 9 | KEY PI04 | The default is the module's previous song/pairing button, which is user programmable. |
| 10 | KEY_PIO5 | The default is the module's next song/disconnect button, which can be programmed by the user |
| 11 | I0 voltage switch | Used to switch the module VDD PADS and the digital I0 power supply voltage on the board. Switch to 3.3V for 3.3V power supply and switch to 1.8V for 1.8V power supply |
| 12 | Module power supply jumper | Used to measure module operating current |
| 13 | 1.27mm Pitch Female Header | EWT104-QC01Z installation location |
| 14 | LITTLE L | Left channel microphone |
| 15 | AUX IN | The AUX audio input interface can be plugged into a 3.5m three-stage plug with insertion detection and path switching. After inserting the 3-stage 3.5mm plug, the microphone power supply will be disconnected and the module audio input channel will switch to AUX IN. After unplugging the 3-stage 3.5m plug, the microphone power supply will be turned on and the module audio input channel will switch to the microphone. |
| 16 | MIC R | Right channel microphone |
| 17 | Stereo headphone amplifier | Stereo headphone amplifier, input connected to the module AUX output, output connected to the AUX OUT interface |
| 18 | TO THE OUT | The AUX OUT interface can be inserted with a 3.5mm three-stage or four-stage plug with path switching. When no 3.5mm plug is inserted, the audio signal output value is 3W stereo amplifier. When a three-stage 3.5m plug is inserted, the audio signal is output to the AUX OUT interface. |
| 19 | 3W Stereo Amplifier | A stereo power amplifier with 3W output power, the input is connected to the stereo headphone amplifier and audio stereo DAC, and the output is connected to the left and right channel speaker interface |
| 20 | OUT L | Left channel speaker interface |
| 21 | OUT R | Right channel speaker interface |
| 22 | Audio Stereo DAC | Audio stereo DAC with I2S interface, the input is connected to the I2S interface of the module, and the output is connected to I2S OUT. |
| 23 | I2S OUT | The AUX_OUT interface can be inserted with a 3.5mm three-stage or four-stage plug with path switching. When no 3.5mm plug is inserted, the audio signal output value is a 3W stereo amplifier. When a three-stage 3.5mm plug is inserted, the audio signal is output to the I2S OUT interface. |
| 24 | SPDIF IN | Optical audio input interface |
| 25 | SPDIF OUT | Optical audio output interface |