Data Sheet - LCSC

1 Data Sheet VL817 (B0) USB Gen 1 Hub Controller January 18th , 2017 Revision Preliminary VL817 USB Gen1 Hub Controller - 2 - Revision History Rev Date Note Initial 01/18/2017 Preliminary Release. EC VL817 USB Gen1 Hub Controller - 3 - Contents Revision History .. 2 Contents .. 3 List of Figures .. 3 Product Features .. 4 VL817 System Overview .. 5 USB Battery Charging Behavior .. 6 Pinout (VL817-Q7) .. 7 Pin List (VL817-Q7).

2 8 Pin Descriptions (VL817-Q7) .. 9 Pinout (VL817-Q5) .. 12 Pin List (VL817-Q5) .. 13 Pin Descriptions (VL817-Q5) .. 14 Electrical specification .. 17 Timing Requirements for SPI Flash .. 18 General Reflow Profile Guidelines .. 20 Package Mechanical Specifications (VL817-Q7) .. 21 Package Mechanical Specifications (VL817-Q5) .. 22 Package Top Side Marking & Ordering Information .. 23 List of Figures Figure 1 VL817 Block Diagram .. 5 Figure 2 VL817-Q7 Pin 7 Figure 3 VL817-Q5 Pin 12 Figure 4 Illustration of SPI Flash Interface Timing (1) .. 19 Figure 5 Illustration of SPI Flash Interface Timing (2) .. 19 Figure 6 Reflow.

3 20 Figure 7 Mechanical specification QFN 76L mm Package .. 21 Figure 8 Mechanical specification QFN 56L mm Package .. 22 Figure 9 Package Top Side Marking .. 23 VL817 USB Gen1 Hub Controller - 4 - Product Features VL817 USB Gen 1 4/2-Port Hub Controller USB Compliant Compliant to universal serial Bus specification Meets all USB ECN through Jan 2017 Compliant to universal serial Bus specification USB Hub Supports MTT Supports Simultaneous Operation of Any Combination of SuperSpeed, High-Speed, Full-Speed, and Low-Speed Devices Supports USB Power Saving Features such as Link Power Management, Ux States, Selective Suspend.

4 And Function Suspend In-house USB PHY employs advanced CMOS process for low power consumption Integrated USB Devices USB HID Class Device (Optional) Implemented as a USB Virtual Device, Facilitates FW Update or Media Control Buttons Configurable Behavior Always Present / Disabled USB Billboard Class Device (Optional) Implemented as a USB Virtual Device Configurable Behavior Expose When Necessary / Always Present / Disabled Full Sideband Signal Support Supports both Individual and Ganged Mode Operation for All Ports Supports PWM LED Status Lights SPI Interface for Firmware. Firmware Upgradable over USB.

5 Management Interface for Specialized Applications Comprehensive USB Battery Charging Support Supports USB Battery Charging specification (SDP, CDP, DCP) Support for Vendor Specific Charging Modes eg. Apple , Samsung, etc. Supports YD/T 1591-2009 Supports Stand-Alone Charging when System is Suspend, Shut Down, or Disconnected Any Combination of DFPs can be Configured to Support USB Battery Charging Power and Package Requires and Inputs 25 MHz Xtal Integrated Voltage Regulators Generate All Required Voltages from 5V Input 5V to Switching DC-DC Regulator 5V to LDO Regulator QFN 76L green package ( mm) QFN 56L green package ( mm)

6 VL817 USB Gen1 Hub Controller - 5 - VL817 System Overview VIA Lab s VL817 is a modern USB Gen 1 Hub Controller, featuring an optimized cost-structure and full compliance with USB Gen 1 specification including ECNs and Compliance Testing Updates through Jan 2017. VL817 is offered in both 2-port and 4-port configurations, and features integrated voltage regulators, new lower-power design, and comprehensive USB Charging support. VL817 supports any combination of SuperSpeed (5 Gbps), High Speed (480 Mbps), Full Speed (12 Mbps), and Low Speed ( ) devices, and the integrated USB hub s Multiple Transaction Translators feature provides increased performance when multiple Full Speed devices are simultaneously used.

7 The integrated 5V DC-DC switching regulator enables VL817 to be powered directly from 5V USB VBus, reducing BOM cost while offering high power efficiency. VL817 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. VL817-based hub devices work under Windows, Mac OS X, and various Linux kernels without additional drivers. VL817-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.

8 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. VL817 incorporates multiple optional USB Virtual Devices including USB Billboard, and USB HID to support Media Control Buttons such as Play/Pause, Volume Up/Down, etc. Figure 1 VL817 Block Diagram VL817 USB Gen1 Hub Controller - 6 - USB Battery Charging Behavior 3 Concepts of Rapid Charging over USB: Rapid Charging over USB enables charging of devices at rates in excess of baseline USB standards.

9 The current limit of USB is 500mA for configured devices, and the current limit of USB is 900mA for configured devices. Depending on the device, Rapid Charging implementations typically feature current limits between 1000mA to 2400mA. It is the Host/Hub s responsibility to advertise Rapid Charging capabilities, and it is the Device s responsibility to recognize and determine those capabilities. Rapid Charging over USB enables charging at rates in excess of baseline USB specifications, so in order to prevent a situation where a device sinks more current than what a port is rated for, different manufacturers employ various charging schemes in an attempt to ensure safe and reliable operation with their respective device and charger.

10 It goes without saying that Rapid Charging will only occur when both Host/Hub and Device supports it. The rate at which a device charges is dependent upon the device. This means that the device must determine the host/hub port s capabilities to determine which charging mode to use. Also, the rate at which a device charges can vary depending on the status of the device. For example, some devices only charge at their maximum rate when the battery is nearly depleted. When the battery is nearly full, they may switch to a trickle-charge mode. The Host/Hub rapid-charging port has no control over this behavior. Supported USB Charging Modes SDP Standard Downstream Port This is a typical USB or USB port and does not explicitly support Rapid USB Charging.