SR-ETH-01-EVK: A Breakthrough Audio Network Development Platform for the AIoT Era

25 - 03,2026

In the rapidly evolving landscape of IoT and Artificial Intelligence, Sunrich proudly introduces the SR-ETH-01-EVK. This Audio Network Development Board is a powerful hardware solution that combines the processing capabilities of the ESP32 with high-speed Ethernet transmission, providing an optimal foundation for modern smart audio systems.

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1. Overview of the SR-ETH-01-EVK

The SR-ETH-01-EVK is a high-performance IoT platform that seamlessly integrates audio input and network transmission functionalities. It is specifically designed for users who need to develop:

Network audio streaming applications.

IoT voice-controlled devices.

Smart speakers, voice sensors, and remote monitoring systems.

2. Powerful and Flexible Hardware Architecture

The core strength of the SR-ETH-01-EVK lies in the perfect synergy between the ESP32 main controller and the DM9051AN(X) Ethernet controller.

Figure 1: Functional block diagram

Key Technical Features:

Central Processing: Powered by an ESP module featuring an Xtensa® 32-bit LX7 dual-core or RISC-V 32-bit single-core processor, with built-in Wi-Fi 2.4GHz and Bluetooth 5 (LE). It excels in AIoT applications like wake word detection, voice command recognition, and smart home panels.

Superior Network Interface: Utilizes the DM9051AN(X) high-speed Ethernet controller. It integrates an SPI interface, a 10/100M PHY, and 4K SRAM for highly stable network connectivity.

Advanced Audio Processing:

- Features the ES8311 low-power, single-channel audio codec, integrating an ADC, DAC, and headphone driver via I2S and I2C interfaces.
- Includes the ES7210, a high-performance 4-channel analog-to-digital audio converter (ADC), ideal for microphone arrays and Acoustic Echo Cancellation (AEC).
- Equipped with the ANT8110, a 3W single-channel Class-D audio amplifier (Audio PA) that delivers robust sound with ultra-low EMI and a high signal-to-noise ratio (SNR).

Storage & Connectivity: Supports a 1-wire mode TF Card (microSD) for audio file playback/storage , alongside USB-C, RJ45, and speaker output ports.

3. Optimized Design for Developers

Every component on the SR-ETH-01-EVK is logically arranged, enabling engineers to easily manipulate, program, and integrate the board into real-world projects.

Figure 2: Component layout diagram – Front view

Figure 3: Component layout diagram – Rear view

The board offers a rich set of peripheral interfaces, including 40 header pins supporting UART, I2C, SPI, and PWM. Furthermore, the USB-C port is not only used for power but also facilitates effortless programming thanks to the DM9625IS USB-to-UART bridge controller.

4. Detailed Technical Specifications

Component	Detailed Description
ESP Module	Xtensa® 32-bit LX7 dual-core or RISC-V 32-bit single-core processor, integrating Wi-Fi and Bluetooth LE.
Ethernet Controller	DM9051AN(X) with SPI interface, 10/100M PHY, and 4K SRAM.
Audio Codec	ES8311 low-power mono codec, featuring integrated ADC, DAC, and low-noise preamplifier.
Audio ADC	ES7210 high-performance 4-channel ADC, supporting mic arrays and AEC.
Audio Amplifier (PA)	ANT8110 3W Class-D mono amplifier with ultra-low EMI and high SNR.
Storage & Peripherals	Supports TF card (1-wire mode), RJ45 port, speaker output, and built-in microphones.
Power Supply	Powered via USB-C. A power adapter of at least 5V/2A is recommended for system stability.

5. Network Performance and Development Environment

Impressive Network Bandwidth: In UDP mode tests using the iperf tool, the board demonstrated highly stable bandwidth throughput, maintaining speeds around 22 – 23 Mbits/sec.

Versatile Software Support: Fully compatible with the ESP-IDF integrated development environment, offering easy setup via VSCode extension, Windows CMD, Linux, and macOS.

Sunrich is committed to providing top-tier hardware solutions and dedicated documentation. Start building your next AIoT smart audio project today with the SR-ETH-01-EVK!