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VIA/威盛 VL81A-Q7 QFN-76 超高速USB 5Gbps4端口集线器控制器
VL81A-Q7 System Overview
VIA Lab’s VL81A-Q7 is a modern USB 3.2 SuperSpeed USB 5Gbps Hub Controller, featuring an optimized cost-structure and full compliance with USB 3.2 specification. VL81A is offered in 4-port configurations, and features integrated voltage regulators, new lower-power design, and comprehensive USB Charging support. VL81A supports any combination of SuperSpeed (5Gbps), High Speed (480Mbps), Full Speed (12Mbps), and Low Speed (1.5Mbps) devices, and the integrated USB 2.0 hub’s Multiple Transaction Translators feature provides increased performance when multiple Full Speed devices are simultaneously used. The integrated 5V DC-DC switching regulator enables VL81A to be powered directly from 5V USB VBus, reducing BOM cost while offering high power efficiency (Integrated Regulators are disabled in current revision).
VL81A features a flexible firmware architecture, providing a framework for custom functions in addition to in-field updates. Various parameters including Tx equalization setting and GPIO behavior are changeable via firmware, including the optionally configurable USB Charging Controller for charging various devices such as smartphones and tablets.
VL81A-based hub devices work under Windows, Mac OS X, and various Linux kernels without additional drivers. VL81A-based hub devices are also compatible with non-x86 devices and platforms that support USB hub functions such as smart phones, tablets, and set-top boxes. It is well suited for all USB hub applications such as standalone USB hubs, Notebook/Ultrabook docking stations/port-replicators, desktop PC front panel, motherboard on-board hub, and USB hub compound devices. VL81A incorporates multiple optional USB 2.0 Virtual Devices including USB Billboard, and USB HID to support Media Control Buttons such as Play/Pause, Volume Up/Down, etc.
VL81A-Q7产品规格书（部分）
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