1. Introduction
The emiuzek D10 WiFi and Bluetooth 5.0 Audio Receiver Module (also referred to as MA88) is a second-generation smart audio module designed for integration into wireless speakers, docking stations, Wi-Fi base stations, home automation, and smart toys. It enables traditional audio systems to be upgraded into intelligent audio systems with advanced wireless capabilities.
This module supports 802.11b/g/n Wi-Fi standard with up to 300Mbps bandwidth, operating in AP, AP client, or station modes. It is fully compatible with Apple AirPlay and Digital Living Network Alliance (DLNA) streaming standards. The D10 supports Hi-Fi audio up to 192KHz, 24-bit, and a wide range of popular audio formats. It also features multi-room and multi-channel audio streaming with perfect synchronization.
With the D10 module, you can wirelessly stream music from your iPhone, iPad, iPod touch, Android devices, or PC. It transforms traditional speaker systems into Internet-enabled devices, allowing playback of Internet audio content such as music, podcasts, radio, or accompanying audio from movies.
Key Features:
- Wireless Connectivity: Supports 2.4GHz 802.11 b/g/n Wi-Fi with optimized performance and Bluetooth 5.0 SBC/AAC.
- Network Modes: Operates in AP, AP Client, or Station modes.
- Streaming Protocols: Compatible with Apple AirPlay, DLNA, Spotify Connect, Pandora, iHeartRadio, Tidal, TuneIn, TCP/IP/UDP/HTTP/UPNP.
- Audio Quality: Supports Hi-Fi audio up to 24-bit/192KHz and common lossless audio formats (MP3, WMA, AAC, AAC+, ALAC, FLAC, APE, WAV).
- Multi-room Audio: Supports multi-room and multi-channel audio streaming with perfect time synchronization.
- Interfaces: Ethernet (10/100Mbps), UART, USB2.0, I2S digital audio input and output.
- Configuration: Built-in web server for easy configuration, remote control via WLAN, and online firmware upgrade.
- App Support: Module configuration via iOS or Android APP.
2. Setup and Installation
2.1 Package Contents
Before you begin, ensure all items are present in your package:
- D10 Wireless Audio Receiver Board
- 20cm 4-pin PH2.0 Cable
- 20cm 2-pin Power Cable
- User Manual (this document)
2.2 Physical Overview and Dimensions
The D10 module features a compact design for easy integration. Refer to the diagrams below for physical dimensions and interface layout.
2.3 Interface Description (36-pin DIP)
The D10 module connects to your custom board via a 36-pin DIP interface. The pinout and descriptions are detailed in the table below.
| Pin | Net Name | Type | Description |
|---|---|---|---|
| 1, 2 | DC 5.0V | Power Input | DC 5.0V, 350mA |
| 3, 4 | GND | Ground | Ground |
| 5 | I2S_WS | O | All pins could be pin shared as GPIO |
| 6 | I2S_CLK | I/O | |
| 7 | I2S_SDO | O | |
| 8 | I2S_SDI | I | |
| 9 | ETH_TXP | O | 10/100M Ethernet interface |
| 10 | ETH_TXN | O | |
| 11 | ETH_RXP | I | |
| 12 | ETH_RXN | I | |
| 13 | USB_DM | I/O | USB 2.0 Host |
| 14 | USB_DP | I/O | |
| 15 | I2C_CLK | O | I2C interface, in module 4.7K resistor pull-up |
| 16 | I2C_SDA | I/O | |
| 17 | RESET | I, IPU | Reset with pull down, reset time >300ms |
| 18 | nReload | I/O, IPU | First Input 0 and keep for more than 5 seconds then change to 1, it will go back to factory setting, in module 4.7K resistor pull-up |
| 19 | GPIO5 | I/O, IPU | in module 4.7K resistor pull-up |
| 20 | DC 3.3V | Power Output | DC 3.3V, 100mA |
| 21 | GND | Ground | Ground |
| 22 | GPIO2 | I/O, IPU | in module 4.7K resistor pull-up |
| 23 | GPIO1 | I/O, IPU | in module 4.7K resistor pull-up |
| 24 | UART_RXD | I | Need keep UART_TXD high during chip boot-up |
| 25 | UART_TXD | O | |
| 26 | GPIO4 | I/O, IPU | |
| 27 | GPIO3 | I/O, IPU | |
| 28 | GND | Ground | Ground |
| 29 | SDIO_D2 | I/O | |
| 30 | SDIO_CMD | O | |
| 31 | SDIO_DO | I/O | |
| 32 | SDIO_CD | I | SDIO, GPIO |
| 33 | SDIO_WP | I | in module 10K resistor pull-up |
| 34 | SDIO_D1 | I/O | |
| 35 | SDIO_CLK | O | |
| 36 | SDIO_D3 | I/O | |
| 37 | REF_CLK | O, IPD | Reference Clock Output |
Notes: I:Input, O:Output, P: Power, IPU: Internal Pull Up, IPD: Internal Pull Down. All pins could be pin shared as GPIO.
2.4 Connecting with an Audio Codec
The D10 module features a digital audio interface (I2S) and supports both master and slave modes for connecting with audio codec ICs.
Master Mode:
In master mode, it is recommended to connect with an audio codec IC for audio playback and recording. Current module firmware supports Wolfson WM8918/WM8960. A reference schematic is provided below for external audio IC connection.
Slave Mode:
When the MA88 module operates in I2S slave mode, it requires external input for both I2S_WS and I2S_CLK. For example, using an MVSilicon AP8048/AP8064 MCU/Codec chip:
- Case 1 (Direct Connection): Wi-Fi, BT, or AUX IN can be directly connected to AP8048/8064. The AP8048 will then determine which source is output to the connected digital amplifier. I2S DATA OUT of the D10 connects to I2S DATA IN of AP8048/8064. The I2S DATA OUT of AP8048 connects to the amplifier. This setup allows for power saving, as Wi-Fi or BT can be switched off independently.
- Case 2 (Re-transmission): AUX IN and BT can be converted to digital I2S input for the MA88 by AP8048. It is possible to re-transmit these inputs through Wi-Fi to other speakers and output it to digital amplifier simultaneously. This enables multi-room audio for Aux-in and BT sources. When connecting to an amplifier with digital input, I2S DATA OUT of AP8048 connects to DATA IN of MA88, and DATA OUT of MA88 connects to the amplifier. MA88 handles receiving data and re-transmitting to other slave speakers during multi-room playback. For analog input, I2S DATA OUT of AP8048 connects to I2S DATA IN of MA88, and I2S DATA OUT of MA88 connects to the DATA IN of AP8048. The AP8048 will output analog audio data to the amplifier.
For detailed schematics and design notes, please refer to the MA88 Design Notes_V100.pdf and MA88 Reference Circuit_V100.pdf documents.
2.5 External Antenna
For optimal Wi-Fi performance, the D10 module uses an external antenna. Select an antenna type that meets IEEE 802.11 b/g/n Wi-Fi standard requirements at 2.4GHz frequency.
| ITEMS | Parameter |
|---|---|
| Frequency range | 2.4~2.5GHz |
| Impedance | 50 Ohm |
| VSWR | 2 (Max) |
| Reflection loss | -10dB (Max) |
2.6 10/100M Ethernet Port
The D10 module provides 10/100Mbps Ethernet interface pins for connection to an Ethernet RJ45 socket. It has a built-in transformer. To enable Ethernet functionality, connect the module to an RJ45 socket via an Ethernet transformer. The detailed diagram is as follows:
2.7 USB Host Port
The D10 module includes a high-speed USB2.0 host interface. Follow the design rule below for populating the USB host interface.
| ITEMS | Parameter |
|---|---|
| Signal Group | USB |
| Topology | Differential Pair Point-Point |
| Reference Plane | Ground Referenced |
| Characteristic Trace Impedance (Zo) | 90 Ω ±10% |
| Trace Width | 4 mils |
| Serpentine Spacing (center to center) | 8.5 mils |
| Minimum Isolation Spacing to Clock Signals | 50 mils |
| Minimum Isolation Spacing to Low-Speed Signals | 20 mils |
| Minimum Isolation Spacing to other USB Pair | 20 mils |
| Total Length (with package length) | Max=8000 mils |
| Maximum Recommended Via Count | 2 (per side) |
| DM to DP Length Matching (with package length) | Match total length to within ±10 mils |
2.8 Power Supply
The D10 module can be powered by a single power supply with a voltage between 3.5V and 5.5V. The peak current is approximately 300mA, with a normal working current of 170mA. In sleep mode (Wi-Fi off), the current is 20mA.
For system stability and optimal Wi-Fi performance, it is recommended to use 100uF and 10uF decoupling capacitors in parallel to reduce power supply ripple.
3. Operating Instructions
3.1 Web Server Setup and Configuration
The D10 module has a built-in web server for configuration via an Internet browser. In factory mode, the SSID of the D10's AP port is "WiFiAudio_xxxx" (where xxxx are four digital numbers). The default IP address, username, and password are:
| Parameters | Default setting |
|---|---|
| SSID | WiFiAudio_xxxx |
| IP address | 10.10.10.254 |
| Mask | 255.255.255.0 |
| DNS | Linkplay.com |
| User name | admin |
| Password | admin |
3.1.1 Web Server Login:
To log in to the built-in web server, ensure your device is on the same network as the D10 module. Open your Internet browser and enter "http://10.10.10.254" or "http://Linkplay.com". The web server supports English and Chinese languages, configurable on the setup page.
If the D10 module is not connected to another AP for Internet access, the web server will direct you to the Wi-Fi setup page. Here, you can choose an AP to connect to. If already connected, it will redirect to the settings page for other configurations.
3.1.2 Connecting the Module to another AP:
On the Wi-Fi setup page, you will see network information, including the connected AP and a list of available APs. Select an AP to connect the module to the Internet. The module can also function as an AP for other devices, operating in "AP client" or "bridge mode".
After entering the password for the chosen AP, a pop-up message will remind you to ensure your user device is on the same network as the D10 module (either directly connected or via the same AP).
3.2 Wireless Audio Streaming
The D10 module supports various wireless audio streaming technologies and protocols.
3.2.1 AirPlay Introduction:
AirPlay, developed by Apple Inc., allows wireless streaming from iOS devices to speakers. It is supported from iOS 4.2 and OS X Mountain Lion, and can also stream music from PC or Mac via iTunes 10.1 or above.
When your devices (iMac, PC, iPod touch, iPhone, iPad) are on the same Wi-Fi LAN as the AirPlay-enabled speaker, the AirPlay button will appear in applications like iTunes or iOS music apps. Click the AirPlay button and select the speaker you wish to stream to.
3.2.2 DLNA Introduction:
DLNA (Digital Living Network Alliance) is a standard for seamless interoperability between devices from various manufacturers. D10 devices with DLNA certification work seamlessly with other DLNA devices.
3.2.3 WiFi Mode (AP Client Mode):
In AP Client mode, the D10 module can act as both an Access Point (AP) and a client simultaneously. It can connect to other wireless APs as a station, while also allowing other wireless devices to connect directly to it. If the D10 is connected to your main wireless AP (which has Internet access), devices connected to the D10 will also have Internet access.
3.3 Multi-room Audio Control
After integrating the D10 module into your audio system, you can synchronize music playback across multiple rooms. Play the same song in all rooms or different music in different rooms, all controlled from a single application.
The system supports various massive audio sources and can be upgraded online for new features like Spotify Connect, Multiroom, AirPlay, DLNA, UPnP, Time Sleeper, Play from NAS, Free Upgrade, and Stereo Pair.
A free APP is available for Android and iOS, supporting multi-language. The module also supports third-party playback protocols (DLNA, AirPlay) and can be controlled from Windows and Mac OS.
4. Maintenance
4.1 Software Upgrade
Software upgrades can be performed manually or online via the web server. This is a critical operation and should be done carefully.
Important Considerations for Software Upgrade:
- Do not play any music or perform other operations during the upgrade process.
- Do not disconnect power to the module during the upgrade.
Manual Upgrade:
Access the module setting page via the web server. Select "Firmware Upgrade" and browse for the firmware file. Click "Apply" to start the upgrade.
Online Upgrade:
If the device is connected to the Internet, you can use the online update feature. On the software upgrade page, click "Check Online update". The module will then check for new versions on the remote maintenance server and prompt you to upgrade.
4.2 Restore to Factory Settings
To restore the module to its factory settings, keep the "nReload" pin low for more than 5 seconds. The system will reboot automatically after the factory settings are restored.
5. Troubleshooting and User Tips
5.1 Common Issues & FAQ
- Q: What app is used to connect the D10 module to Wi-Fi?
A: The D10 module can be configured via its built-in web server using any standard web browser (e.g., Chrome, Firefox, Safari) by navigating to "http://10.10.10.254" or "http://Linkplay.com". Additionally, a free APP is available for both Android and iOS devices for configuration and control. - Q: How do I debug the module using UART?
A: For UART debugging, set the following parameters: Baud rate: 57600, Data bit: 8, Parity bit: None, Stop bit: 1, Flow control: None (DTR/DSR: None, RTS/CTS: None). - Q: How do I use WPS for Wi-Fi setup?
A: If your router supports WPS (Wi-Fi Protected Setup), you can simplify the Wi-Fi setup. Instead of manually entering the Wi-Fi SSID and password, press the WPS button (PBC mode) on your router. To enter WPS mode on the D10 module, keep the "nReload" pin low for a short pulse (300ms < t < 5s).
5.2 User Tips
- Stable Power: Ensure a stable power supply between 3.5V and 5.5V. Using 100uF and 10uF decoupling capacitors in parallel is recommended to minimize ripple and ensure stable Wi-Fi performance.
- Antenna Placement: For the best Wi-Fi performance, ensure the external antenna is properly connected and positioned away from obstructions.
- Firmware Updates: Regularly check for and install firmware updates via the online update feature to ensure you have the latest features and bug fixes.
6. Specifications
Detailed technical specifications for the D10 WiFi and Bluetooth 5.0 Audio Receiver Module:
| Category | Item | Parameter |
|---|---|---|
| WIFI | Standard | 802.11 b/g/n 1T1R |
| Frequency | 2.412GHz-2.484GHz | |
| Transmit | 802.11b: +20dBm (Max.) | |
| 802.11g: +18dBm (Max.) | ||
| 802.11n: +15dBm (Max.) | ||
| Receive Sensitivity | 802.11b: -89dBm | |
| 802.11g: -81dBm | ||
| 802.11n: -71dBm | ||
| Antenna | External, I-PEX | |
| Wi-Fi Working Mode | AP Client (by default) / AP / STA | |
| Security | WEP/WPA-PSK/WPA2-PSK/WAPI | |
| Encryption | WEP64/WEP128/TKIP/AES | |
| Software | User Configuration | Web browser, APP |
| Software Update | Web browser, APP | |
| Online Update | Support | |
| Audio Source | U disk, Smartphone/Tablet/PC, online contents | |
| Applications Support | IOS, Android, Win 7/8 | |
| Audio Streaming Protocol | AirPlay | |
| DLNA, Spotify Connect, QQ music Qplay | ||
| Multi-room Audio | Support Airplay, Spotify Connect, DLNA, U Disk attached to WiFi device, BT and Aux-in multi-room transmission | |
| Other | I2C | 24bit, up to 192KHz |
| Status LED | AP status, client status, power, WiFi data transfer | |
| IO Extension | Ethernet, USB, UART, GPIO, I2C | |
| Module Connector | 2.0×36Pin, Male | |
| Power Supply | DC 3.5~5V | |
| Power Consumption | <320mA | |
| Standby Power | <20mA | |
| Operating Temperature | -20~50°C | |
| Storage Temperature | -40~125°C | |
| Dimension (mm) | 38.7×28.5×3, without Pin |
6.1 Electrical Characteristics
| Parameter | Symbol | Test Conditions | Min | Type | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Input | VDD | 3.5 | 5.0 | 5.0 | V | |
| Power consumption | IDD | - | - | 320 | mA | |
| Standby Current | ISC | - | - | 20 | μA | |
| Voltage Output "Low" | VOL | - | - | 0.6 | V | |
| Voltage Output "High" | VOH | 2.6 | - | - | V | |
| Voltage Input "Low" | VIL | - | - | 0.7 | V | |
| Voltage Input "High" | VIH | 2.7 | - | - | V |
7. Warranty and Support
This product is manufactured by emiuzek. For warranty information, please refer to the terms and conditions provided at the time of purchase or contact your retailer. For technical support, please reach out to the manufacturer or your point of purchase.
Note: The manufacturer reserves the right to change products and specifications without prior notice. This manual provides typical examples and does not convey any license under any patents or other rights.
For additional detailed documentation, including design notes and reference circuits, please consult the official PDF manual: D10 Wireless Smart Audio Module Datasheet (PDF).