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Enabling SuperSpeed USB and Beyond


VL212 - USB 3.1 Gen1 Hub Controller with USB-PD support


VIA Lab’s VL212 is an USB-PD Hub with USB 3.1 Gen1 and USB Power Delivery 2.0/3.0 support, full compliance with USB 3.1 Gen1 specification including ECNs and Compliance Testing Updates to date. VL212 features the unified USB Hub and PD Controller design, supporting advanced USB-PD functionality such as USB-C Bridge for USB Authentication and USB-PD Firmware Update for downstream USB-PD devices. VL212 features an integrated USB Type-C Port Master (TCPM) which can be connected to the VP230 USB Type-C Port Controller. VL212 is offered in 4-port configurations: a single USB 3.1 and three USB 2.0 ports, and features integrated voltage regulators, new lower-power design, and comprehensive USB Charging support. VL212 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 VL212 to be powered directly from 5V USB VBus, reducing BOM cost while offering high power efficiency.

Block Diagram

Key Features

  • USB 3.1 Compliant
    - Compliant to Universal Serial Bus 3.1 Specification
    - Meets all USB 3.1 ECNs and Compliance Testing Updates to date.
    - Compliant to Universal Serial Bus 2.0 Specification
    - USB 2.0 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, and Function Suspend - In-house USB PHY employs advanced CMOS process for low power consumption
  • USB Type-C 1.0 Rev 1.2 Compliant
    - Compliant to USB Type-C Specification Rev 1.2
    - Compliant to USB Type-C Port Controller Interface Specification Rev 1.0
    - Supports up to 2x Independently Configurable TCPC
  • USB Power Delivery 2.0/3.0
    - Compliant to USB Power Delivery 2.0 Specification Rev 1.2
    - Compliant to USB Power Delivery 3.0
    - Supports Fast Role Swap - Supports USB-C Bridge
  • Integrated USB Devices
    USB HID Class Device (Optional)
    - Implemented as a USB 2.0 Virtual Device, Facilitates FW Update or Media Control Buttons
    - Configurable Behavior – Always Present / Disabled
    USB Billboard Class 1.1 Device (Optional)
    - Implemented as a USB 2.0 Virtual Device
    - Configurable Behavior – Expose When Necessary / Always Present / Disabled
    USB-C Bridge Class Device (Optional)
    - Implemented as a USB 2.0 Virtual Device. Facilitates USB to PD Bridge Functionality
    - Configurable Behavior – 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
    - Management Interface for Specialized Applications
  • Comprehensive USB Battery Charging Support
    - Supports USB Battery Charging Specification v1.2 (SDP, CDP, DCP)
    - Support for Vendor Specific Charging Modes eg. Apple 2.4A, 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 3.3V and 1.1V Inputs - 25MHz Xtal - Integrated Voltage Regulators Generate All Required Voltages from 5V Input - 5V to 1.1V Switching DC-DC Regulator - 5V to 3.3V LDO Regulator - QFN 48L green package (6x6x0.85 mm)