SLLSEO6C June   2015  – August 2018 TUSB321

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Sample Applications
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Cables, Adapters, and Direct Connect Devices
        1. 7.1.1.1 USB Type-C Receptacles and Plugs
        2. 7.1.1.2 USB Type-C Cables
        3. 7.1.1.3 Legacy Cables and Adapters
        4. 7.1.1.4 Direct Connect Devices
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Port Role Configuration
        1. 7.3.1.1 Downstream Facing Port (DFP) - Source
        2. 7.3.1.2 Upstream Facing Port (UFP) - Sink
        3. 7.3.1.3 Dual Role Port (DRP)
      2. 7.3.2 Type-C Current Mode
      3. 7.3.3 VBUS Detection
      4. 7.3.4 Cable Orientation and External MUX Control
      5. 7.3.5 VCONN Support for Active Cables
    4. 7.4 Device Functional Modes
      1. 7.4.1 Unattached Mode
      2. 7.4.2 Active Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 DFP Mode
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
    3. 8.3 Initialization Set Up
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.2 Type-C Current Mode

The TUSB321 device supports both advertising and detection of Type-C current. When TUSB321 is a UFP or a DRP connected as a sink, the OUT1 and OUT2 pins are used to inform the system the detected USB Type-C current being broadcasted by the attached DFP. When TUSB321 device is a DFP or a DRP connected as a source, the CURRENT_MODE pin is used to advertise the USB Type-C current. The current advertisement for the TUSB321 device is 500 mA (for USB2.0) or 900 mA (for USB3.1) if CURRENT_MODE pin is left unconnected or pulled to GND. If a higher level of current is required, the CURRENT_MODE can be pulled up to VDD through a 500-kΩ resistor to advertise medium current at 1.5 A or pulled up to VDD through a 10-kΩ resistor to advertise high current at 3 A. Table 2 lists the Type-C current advertisements and detection.

Table 2. Type-C Current Advertisement and Detection

TYPE-C CURRENT UFP or DRP acting as UFP
Current Detection		 DFP or DRP acting as DFP
Current Advertisement
Default 500 mA (USB2.0)
900 mA (USB3.1) 		OUT1 = High
OUT2 = High (unattached) or Low (attached)		 CURRENT_MODE = L
Medium - 1.5 A OUT1 = Low
OUT2 = High 		CURRENT_MODE = M
High - 3 A OUT1 = Low
OUT2 = Low		 CURRENT_MODE = H