EWM104-BT5125(I2S) QCC5125 chip BLE5.1 Audio Module Support CVC noise reduction technology APT-X LL Low Latency Transmission
[Chip solution]：QCC5125
[Output interface]：I2S
[Communication interface]： USB
[Communication distance]：120m
[Product size]：13*18mm
[Product weight]：1.0g±0.1g
[Introduction]：EWM104-BT5125 (I2S) is a high-performance, low-power, cost-effective BLE5.1 Bluetooth audio module launched by Ebyte. The main control uses Qualcomm's QCC5125 chip to provide the module with a system with on-chip Bluetooth, audio and programmable application processors. It includes high-performance analog and digital audio codecs, class AB and class D headphone drivers, advanced power management, flexible interface protocols and programmable input/output (PIO).
| Pin number | Pin Name | Pin Direction | Pin Purpose |
| 1 | NC | - | |
| 2 | SPDIF_IN/PIO[19] | I/O | SPDIF optical audio data input, PIO[19] |
| 3 | I2S_SDATA/SPDIF_OUT/PIO[18] | I/O | I2S bit data output, SPDIF optical audio data output, PIO[18] |
| 4 | I2S_LRCK/PIO[17] | I/O | I2S frame clock output, PIO[17] |
| 5 | I2S_SCK/PIO[16] | I/O | I2S bit clock output, PIO[16] |
| 6 | I2S_MCLK/PIO[15] | I/O | I2S system clock output, PIO[15] |
| 7 | VBAT_SENSE | Analog | Battery voltage detection |
| 8 | USB_DN | - | Full-speed USB interface DN |
| 9 | USB_DP | - | Full-speed USB interface DP |
| 10 | VCHG | P | Internal power regulator and charger voltage input, 4.0~6.5V |
| 11 | VCHG_SENSE | Analog | Charger input voltage detection pin. When using the internal charger or no charger, this pin is connected to the VCHG pin. |
| 12 | CHG_EXT | Analog | External charger transistor current control. |
| 13 | SYS_CTRL/PIO[0] | I | Typically connected to an on/off button. Powers up the device by pressing the button when the battery and/or charger still has power but the software has put the device in a powered-down or dormant state. Also functions as a PIO[0] digital input in normal operation. |
| 14 | VBAT | P | Battery power input, 2.8~4.6V |
| 15 | GND | G | GND |
| 16 | AIO[0]/LED[0] | Analog/DO | Analog/digital input, open drain LED output, please refer to the LED function diagram below for LED function |
| 17 | AIO[1]/LED[1] | Analog/DO | Analog/digital input, open drain LED output, please refer to the LED function diagram below for LED function |
| 18 | AIO[2]/LED[2] | Analog/DO | Analog/digital input, open drain LED output, please refer to the LED function diagram below for LED function |
| 19 | AIO[4]/LED[4] | Analog/DO | Analog/digital input, open-drain LED output |
| 20 | AIO[5]/LED[5] | Analog/DO | Analog/digital input, open-drain LED output |
| 21 | GND | - | GND |
| 22 | 1V8 | P | 1.8V power output |
| 23 | VDD_PADS1 | P | 1.8V/3.3V PIO voltage input |
| 24 | VDD_PADS3_7 | P | 1.8V/3.3V PIO voltage input |
| 25 | PIO[4] | I/O | Button, PIO[4], short press to go to the previous song, long press to connect to Bluetooth, user programmable |
| 26 | PIO[3] | I/O | Button, PIO[3], short press to pause playback, long press to reduce volume, user programmable |
| 27 | PIO[6] | I/O | PIO[6] |
| 28 | PIO[5] | I/O | Button, PIO[5], short press to play next song, long press to disconnect Bluetooth, user programmable |
| 29 | PIO[8] | I/O | PIO[8] |
| 30 | PIO[7] | I/O | PIO[7] |
| 31 | PIO[2] | I/O | Button, PIO[2], short press to play, long press to increase volume, user programmable |
| 32 | PIO[1] | I/O | Reset, PIO[1] |
| 33 | NC | - | |
| 34 | SPK-RN | Analog | DAC audio differential output right channel negative |
| 35 | SPK-RP | Analog | DAC audio differential output right channel positive |
| 36 | SPK-LN | Analog | DAC audio differential output left channel negative |
| 37 | SPK-LP | Analog | DAC audio differential output left channel positive |
| 38 | GND | GND | |
| 39 | MIC_BIAS | Analog | Microphone bias voltage output, 1.5~2.1V |
| 40 | MIC2_N | Analog | Microphone audio differential input 2 negative |
| 41 | MIC2_P | Analog | Microphone audio differential input 2 positive |
| 42 | MIC1_N | Analog | Microphone audio differential input 1 negative |
| 43 | MIC1_P | Analog | Microphone audio differential input 1 positive |
| 44 | GND | - | GND |
| 45 | GND | - | GND |
| 46 | ON | - | Bluetooth antenna interface |
| 47 | GND | - | GND |
| 48 | PIO[54] | I/O | PIO[54] |
| 49 | PIO[53] | I/O | AUX audio input insertion detection, PIO[53] |
| 50 | PIO[52] | I/O | LED indicators, PIO[52], customer programmable |
| 51 | PIO[60] | I/O | PIO[60] |
| 52 | PIO[61] | I/O | PIO[61] |
| 53 | PIO[21] | I/O | LED indicators, PIO[21], customer programmable |
| 54 | PIO[20] | I/O | Audio amplifier enable, PIO[20] |
| Special note: The above pin function description is only for the default program function when our company ships from the factory. If you need other functions, please contact our company for customization. If you want to develop pin functions yourself, please refer to the official user manual of QCC5125. | |||