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Enabling SuperSpeed USB and Beyond


VL102 - DP Alt-mode & PD 3.0 Controller for USB-C Devices


VIA Lab’s VL102 is a highly integrated single chip DisplayPort Alternate mode and Power Delivery 3.0 controller for USB-C devices that designed for applications like USB-C video adapters and USB-C multi-function docking stations. Integrated USB-C charging UFP, VL102 can perform DP alt-mode video out functionality and simultaneously enable charging connected PD host once external power is detected. Integrated USB-C DRP can either connect to USB-C power adapter to charge PD host or connect to USB-C devices to do data transfer. A D+/D- charging ePHY is integrated to support chargers using D+/D- to do protocol handshake. VL102’s Device Policy Manager could negotiate power rules between its DRP and UFP then enable power charging-through. Charging a host under dead battery mode and fast role swap are supported. SBU1/SBU2 switch is built-in to support USB-C cable flipping feature. USB Billboard device and USB-C bridge function are implemented to meet “VESA DP Alt-Mode on USB Type-C” spec and let the USB host to communicate with PD products connected on downstream port.

Built-in required linear voltage regulators, Vbus voltage detector, and Vbus current detector, VL102 can work perfectly with power input either from Vconn power or from Vbus power and can monitor abnormal power behavior. Up to 9 GPIO pins are available for power discharge control, power switch control, data switch control, or other special application usage. The SPI interface can support external flash for firmware upgrades through USB Billboard device. VL102 is available in QFN 48L (6x6x0.85 mm) green packages to fit small form-factor design.

Block Diagram

Key Features

  • CC Logic & PD Engine supporting one charging UFP and one DRP
    – Compliant to USB Type-C Cable and Connector Specification Revision 1.2
    – Compliant to USB Power Delivery Specification Revision 3.0 Version 1.0a
    – Integrated Type-C transceivers, supporting one charging UFP and one DRP
    – Built-in pull-up/pull down resistors, including Rp, Rd, and Ra
    – Built-in Vconn power switch
  • DP Alt-mode Configuration
    – Compliant to VESA DisplayPort Alt Mode on USB Type-C Standard Version 1.0a
    – DP mode Discovery/Enter/Exit
    – DP configure, status update, source/sink connection detection
    – Built-in Aux_CH switch
  • USB-C Charging UFP Capability
    – Charging connected PD hosts once external power is available
    – Supports Provider and Consumer roles
    – Supports up to PD power Profile 5 as Source
    – Supports charging dead battery
  • USB-C DRP Capability
    – Supports Provider and Consumer roles
    – Supports PD Power Rule up to 100W as Sink and 15W as Source
    – Built-in D+/D- Charging ePHY for chargers using D+/D- as protocol handshake
    – Built-in USB HS data switch
  • USB Billboard Device & USB C-Bridge
    – Compliant to USB Device Class Definition for Billboard Devices Revision 1.1
    – Compliant to USB Type-C Bridge Spec Revision 1.0 RC
    – Integrated in-house USB2.0 PHY
  • Fast 8051 Macro cell 80C32-Compatible Microcontroller
    – Standard 1T 8051 instruction set
    – Embedded Mask ROM and SRAM
    – Supports external SPI flash for firmware upgrade
  • Built-in Voltage Regulators, Voltage Detector, and Current Detector
    – 5.0V to 3.3V LDO & 3.3V to 1.8V LDO
    – Auto power source selection between Vbus and Vconn
    – Vbus Voltage Detector and Vbus Current Detector for power monitoring
  • GPIOs for Special Function and Control
    – 9 GPIOs for application customization and one I2C master interface
  • Physical
    – QFN 48 green package (6x6x0.85 mm)
  • Certification
    – PD 2.0 Certification TID: 1010103
  • Application
    – USB-C video adapters
    – USB-C Multi-function docks