Overview
The HD3SS3220RNHR, produced by Texas Instruments, is a USB Type-C DRP (Dual Role Port) controller integrated with a SuperSpeed 2:1 multiplexer. This device is designed to be compatible with USB Type-C specifications and supports USB 3.1 Gen 1 and Gen 2 speeds up to 10 Gbps. It features Channel Configuration (CC) logic, 5V VCONN sourcing, and the ability to operate as a Downstream Facing Port (DFP), Upstream Facing Port (UFP), or a Dual Role Port (DRP), making it versatile for various applications.
Key Specifications
| Parameter | Description |
|---|---|
| USB Speed | Up to 10 Gbps (USB 3.1 Gen 1 and Gen 2) |
| Port Configuration | DFP, UFP, or DRP |
| Multiplexer | Integrated 2:1 SuperSpeed MUX |
| Channel Configuration | CC logic for cable orientation and role detection |
| VCONN Sourcing | 5V VCONN sourcing |
| VBUS Detection | VBUS input voltage detection (5-28V) |
| Current Advertisement | Tri-level input pin for current advertisement (Default, Mid, High) |
| GPIO Signals | DIR signal for cable orientation indication |
Key Features
- Integrated 2:1 SuperSpeed multiplexer to handle cable flips and ensure correct signal routing.
- Channel Configuration (CC) logic to determine port role and cable orientation.
- Support for DFP, UFP, and DRP modes, configurable via the PORT pin.
- 5V VCONN sourcing for USB Type-C ecosystems.
- VBUS detection for UFP attachment.
- Tri-level input pin for current advertisement without I2C.
- GPIO signal (DIR) indicating cable orientation.
- Compatibility with all USB Type-C receptacles, plugs, and cables as defined by the USB Type-C specification.
Applications
The HD3SS3220RNHR is ideal for a wide range of applications, including:
- Set-top boxes
- Full-featured platforms and devices
- Devices requiring USB 3.1 Gen 1 and Gen 2 speeds
- Systems needing flexible port configuration (DFP, UFP, DRP)
- Applications requiring cable flip handling and automatic orientation detection
Q & A
- What is the maximum USB speed supported by the HD3SS3220RNHR?
The HD3SS3220RNHR supports up to 10 Gbps (USB 3.1 Gen 1 and Gen 2). - What are the possible port configurations for the HD3SS3220RNHR?
The device can be configured as a Downstream Facing Port (DFP), Upstream Facing Port (UFP), or a Dual Role Port (DRP). - How does the HD3SS3220RNHR handle cable orientation?
The device uses Channel Configuration (CC) logic to determine the orientation of the cable and configures the USB SS mux accordingly. - What is the purpose of the VCONN sourcing in the HD3SS3220RNHR?
The 5V VCONN sourcing is for ecosystems implementing USB Type-C. - How does the HD3SS3220RNHR detect VBUS attachment?
VBUS detection is done through the VBUS_DET pin, which requires an external 900K resistor. - Can the HD3SS3220RNHR advertise different current levels?
Yes, it can advertise Default, Mid, or High current levels using a tri-level input pin. - What is the function of the DIR GPIO signal in the HD3SS3220RNHR?
The DIR signal indicates the orientation of the cable. - Is the HD3SS3220RNHR compatible with all USB Type-C cables and receptacles?
Yes, it supports all cables, receptacles, and plugs defined by the USB Type-C specification. - Does the HD3SS3220RNHR support USB Power Delivery (PD) communications?
No, it does not support any USB feature that requires USB Power Delivery (PD) communications over CC lines. - How is the port mode configured in the HD3SS3220RNHR?
The port mode is configured using the PORT pin, which can be set high for DFP, low for UFP, or left floating for DRP mode.
