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Overview
Applications
Industry Challenges
Our Solution
Core Capabilities
Customer Value
Overview
USB Intelligent Interconnect Solution
As IoT devices become more diverse and connected use cases continue to grow, efficient and reliable device connectivity has become a key design challenge. Traditional solutions often rely on multi-chip architectures that add cost and complexity. FANlun's USB solution is built on ESP32-S, ESP32-C, and ESP32-P series SoCs and integrates USB 2.0 OTG together with USB-Serial-JTAG as standard peripherals. It supports both Host and Device modes, enabling a single chip to cover scenarios ranging from high-speed video transmission to low-power human-machine interaction. The solution eliminates the need for extra bridge chips, supports plug-and-play and hot swapping, and provides a complete USB ecosystem for audio/video transport, 4G network extension, external storage, and interactive peripherals. Whether used in smart peephole cameras, 4G IoT gateways, wireless USB drives, or expansion displays, the FANlun USB platform delivers rich functionality with minimal BOM cost.
Applications
Industry Challenges
Fragmented Connectivity Solutions
Different peripherals often require different interface chips, making hardware design complex.
Limited Transmission Speed
Traditional serial flashing is slow and video bandwidth is often insufficient.
Difficult Multi-Device Coordination
Connecting several USB devices at once usually requires complex protocol stacks and extra management chips.
Power Management Challenges
Hot plugging and USB power control are difficult to optimize, affecting overall system stability.
High Development Barrier
Implementing USB protocol stacks is complex, and many small and mid-sized manufacturers lack specialized driver expertise.
Complex System Integration
Wireless and wired connectivity often need multiple chips working together, increasing BOM cost by more than 30%.
Difficult Debugging
Traditional JTAG debugging needs extra interfaces and complicated configuration, lengthening development cycles.
Weak Interoperability
Compatibility issues between USB devices from different vendors damage user experience.
Security Risks
USB data transmission often lacks strong security mechanisms and can be vulnerable to man-in-the-middle attacks.
Our Solution
USB Intelligent Interconnect Solution
FANlun's USB solution provides two core architectures: a USB 2.0 OTG platform and a USB-Serial-JTAG platform. The OTG solution is based on ESP32-S2, ESP32-S3, and ESP32-P4 chips and supports both full-speed 12 Mbps and high-speed 480 Mbps operation, allowing flexible switching between host and device roles. In host mode, it supports four major application domains: UVC and UAC audio-video transport with up to 1080P at 60 FPS, 4G networking plus Wi-Fi sharing, external storage access up to 2 TB, and HID human-interface applications, all with hot-plug support and USB hub expansion. In device mode, it supports standard USB classes including UAC 2.0 audio, UVC video, MSC storage, HID input devices, and expansion displays, while also enabling hybrid wired and wireless transport through Wi-Fi. The USB-Serial-JTAG architecture, built on ESP32-C3, ESP32-S3, ESP32-C6, and related chips, provides dedicated USB device functionality without external bridge chips, increases firmware flashing speed by five times, and greatly simplifies JTAG debugging. The whole family is built on ESP-IDF, with complete drivers, sample code, LVGL GUI support, Matter interoperability, and end-to-end support from prototyping through mass production.
Core Capabilities
01Full-Function USB Host Support
High-speed audio and video handling with UVC and UAC support for 1080P at 60 FPS video transport and 48 KHz multi-channel audio, suitable for smart doorbells and endoscopes.
4G network extension compatible with Cat.1 and Cat.4 modules for PPP dial-up networking and Wi-Fi hotspot sharing, improving network throughput by 300%.
Storage expansion supporting USB 3.1, 3.0, and 2.0 drives up to 2 TB with FAT32 and exFAT file systems, including USB-drive-based OTA updates.
Rich HID interaction support for keyboards, mice, gamepads, and similar devices, with multi-device connectivity through USB hubs.
Plug-and-play user experience with hot plug, automatic recognition, and automatic configuration.
02Flexible USB Device Mode
Audio device support compliant with UAC 2.0 across multiple sample rates and bit depths for high-quality microphones and speakers.
Video device support compliant with UVC 1.5 for isochronous and bulk transfer modes, enabling USB cameras and capture devices.
Storage emulation through USB MSC for U-disk behavior combined with Wi-Fi-based wireless file sharing and synchronization.
Dual-mode HID capability across USB HID and BLE HID to create cross-platform input devices.
Expansion display support delivering 720P at 38 FPS video transport plus integrated audio and touch for signature pads and auxiliary monitors.
03Professional Development and Debugging
High-speed firmware flashing through USB-Serial-JTAG at five times the speed of traditional serial programming.
Simplified debugging with built-in JTAG capabilities and no need for extra hardware.
A robust protocol foundation combining FANlun-developed USB stack technology with the TinyUSB open-source ecosystem.
Rich development resources including 100 plus sample projects, detailed API references, and video tutorials.
Mass-production optimization tools for flashing and validation to smooth the transition from development to manufacturing.
Customer Value
Lower BOM Cost
Single-chip integration replaces multi-chip designs, reduces component count by 40%, and lowers manufacturing cost by 35%.
Shorter Development Cycles
Complete reference designs and sample code can reduce prototype development time by 60%.
Major Performance Gains
High-speed USB 2.0 increases transfer throughput by 300% and cuts response latency by 80%.
Better User Experience
Hot-plug support and plug-and-play behavior can improve user satisfaction by 45%.
Product Differentiation
Multi-function integration and smart interaction significantly improve market competitiveness.
Reduced Maintenance Cost
Remote diagnostics and OTA capability can reduce after-sales issues by 50%.
Ecosystem Compatibility
Standard USB protocol support ensures compatibility with 99% of USB peripherals and lowers the barrier for end users.
Long-Term Technical Assurance
Continuous software updates and long-term supply commitments protect the full product lifecycle.
Faster Market Access
Pre-certified USB modules and compliance guidance reduce certification time and risk.
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