Microchip USB4604-1080HN: A 4-Port USB 2.0 Hi-Speed Hub Controller for Embedded Applications
The increasing complexity of modern embedded systems demands robust and reliable connectivity solutions. In many applications, expanding USB connectivity is a fundamental requirement, whether for industrial automation, medical devices, point-of-sale terminals, or gaming systems. The Microchip USB4604-1080HN stands out as a highly integrated, single-chip 4-port USB 2.0 Hi-Speed hub controller designed specifically to meet the rigorous demands of these embedded environments.
Engineered for performance and efficiency, this hub controller supports data transfer rates up to 480 Mbps on all four downstream ports, ensuring full compatibility with the USB 2.0 specification. Its core architecture is built around a high-performance USB transceiver and a serial interface engine (SIE), which manages the essential USB protocol functions. A key feature of the USB4604 is its highly flexible clocking system. It can operate with a single 24 MHz crystal or oscillator, or even be driven by an external clock source, simplifying design and reducing bill-of-materials costs.
Beyond basic connectivity, the USB4604-1080HN is packed with advanced features that enhance system-level integration and reliability. It includes integrated downstream termination resistors and built-in 5V-to-3.3V and 3.3V-to-1.2V linear regulators, significantly minimizing the number of external components required. This level of integration leads to a smaller PCB footprint and a more power-efficient design. For robust power management, the hub offers individual or ganged power control and per-port overcurrent detection, providing crucial protection for connected devices.
The hub’s configuration flexibility is another major advantage. Critical parameters, such as custom vendor IDs (VIDs) and product IDs (PIDs), port status, and manufacturer strings, can be stored in an internal non-volatile memory (NVM). This allows designers to customize the device without needing external EEPROMs in standard configurations, streamlining the manufacturing process. Furthermore, the device supports battery charging functionality, enabling downstream ports to charge portable devices even when the host system is suspended or off.
Housed in a compact, space-saving 36-pin QFN package, the USB4604-1080HN is an ideal solution for space-constrained applications. Its industrial-grade temperature range and robust design make it suitable for a wide array of challenging environments, ensuring stable and dependable operation.
ICGOOODFIND: The Microchip USB4604-1080HN is a superior, highly integrated solution for adding robust USB 2.0 hub functionality to embedded systems. Its combination of high-speed performance, advanced power management, significant design flexibility, and a minimal external component count makes it an excellent choice for developers aiming to create efficient, reliable, and cost-effective connected products.
Keywords: USB 2.0 Hub Controller, Embedded Applications, Hi-Speed USB, Power Management, Integrated Circuit.
