3220DFP-DGLEVM: USB-A to USB-C MUX w/ DFP Controller

The HD3SS3220 DFP Dongle EVM is designed to evaluate HD3SS3220 devices for DFP implementations. This EVM can also be used as a hardware reference design for any implementation using the HD3SS3220 with a USB-C connector.

HD3SS3220 is a USB SuperSpeed (SS) 2:1 mux with DRP port controller. The device provides Channel Configuration (CC) logic and 5V VCONN sourcing for ecosystems implementing USB Type-C. The HD3SS3220 can be configured as a Downstream Facing Port (DFP), Upstream Facing Port (UFP) or a Dual Role Port (DRP) making it ideal for any application.

The HD3SS3220, in DRP mode, alternates presenting itself as a DFP or UFP according to the Type-C specifications. The CC logic block monitors the CC1 and CC2 pins for pull-up or pull-down resistances to determine when a USB port has been attached and its port role. Once a USB port has been attached, the CC logic also determines the orientation of the cable and configures the USB SS mux accordingly. Finally, CC logic advertises or detects Type-C current mode – Default, Mid, or High in DFP and UFP modes respectively.

Excellent dynamic characteristics of the integrated mux allow switching with minimum attenuation to the SS signal eye diagram and very little added jitter. The device’s switch paths deploy adaptive common mode voltage tracking resulting identical channel despite different common mode voltage for RX and TX channels.

Features:

• Plug and play design

• Operates off of the 5V VBUS from the legacy Type A USB connection

• Can provide VCONN over a CC pin based upon Type C plug orientation and Ra detection

• The Type-A plug can be connected to a USB legacy Type-Areceptacle for host side connection

• Support both connection orientations on the USB Type-C™ port

• USB Type-C Port Controller with Integrated 2:1 SuperSpeed Mux

• Compatible to USB Type-C™ Specifications

• Supports USB 3.1 G1 and G2 up to 10 Gbps

• Supports up to 15 W of Power Delivery with 3-A Current Advertisement and Detection

• Mode Configuration

  – Host Only – DFP/Source

  – Device Only – UFP/Sink

  – Dual Role Port - DRP

• Channel Configuration (CC)

  – Attach of USB Port Detection

  – Cable Orientation Detection

  – Role Detection

  – Type-C Current Mode (Default, Mid, High)

• V(BUS) Detection and VCONN Support for Active Cables

• Audio and Debug Accessory Support

• Supports for Try.SRC and Try.SNK DRP Modes

• Configuration Control through GPIO and I2C

• Low Active and Standby Current Consumptions

• Industrial Temperature Range of –40 to 85°C