Description

VIA Lab’s VL818 is a modern USB 3.2 SuperSpeed USB 5Gbps Hub Controller, featuring an optimized cost-structure and full compliance with USB 3.2 specification including ECNs and Compliance Testing Updates to date. VL818 is offered in both 2-port and 4-port configurations, and features integrated voltage regulators, new lower-power design, and comprehensive USB Charging support. VL818 supports any combination of SuperSpeed (5Gbps), High Speed (480Mbps), Full Speed (12Mbps), and Low Speed (1.5Mbps) devices. The integrated 5V DC-DC switching regulator enables VL818 to be powered directly from 5V USB VBus, reducing BOM cost while offering high power efficiency.

Block Diagram

Key Features

• USB 3.2 Compliant
  - Compliant to Universal Serial Bus 3.2 Specification; Meets all USB 3.2 ECNs and Compliance Testing Updates to date.
  - Compliant to Universal Serial Bus 2.0 Specification, USB 2.0 Hub Supports STT
  - 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
• Certification
  - Earned USB 3.2 SuperSpeed USB 5Gbps certification TID# 4472
• Integrated USB Devices
  - USB Billboard Class 1.1 Device (Optional / Configure by I2C or EEPROM)
  - Implemented as a USB 2.0 Virtual Device
  - Configurable for USB PD Accessory Support (Co-work with VL10X)

• Full Sideband Signal Support
  - Gang Mode for USB Battery Charging Support on All Ports
  - Supports PWM LED Status Lights
  - Easy Management through I2C/ EEPROM
• Comprehensive USB Battery Charging Support
  - Supports USB Battery Charging Specification v1.2 (SDP, CDP)
  - 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 56 green package (7x7x0.85 mm)
  - QFN 40 green package (5x5x0.85 mm)