SNLS757B June   2024  – November 2024 TUSB2E221

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Variants
  6. 5 Pin Configuration and Functions
  7. 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. 6.7 Timing Requirements
    8. 6.8 Typical Characteristics
  8. 7 Parametric Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 USB 2.0
      2. 8.3.2 eUSB2
      3. 8.3.3 Cross MUX
    4. 8.4 Device Functional Modes
      1. 8.4.1  Repeater Mode
      2. 8.4.2  Power-Down Mode
      3. 8.4.3  UART Mode
      4. 8.4.4  Auto-Resume ECR
      5. 8.4.5  L2 State Interrupt Modes
      6. 8.4.6  Attach Detect Interrupt Mode
      7. 8.4.7  GPIO Mode
        1. 8.4.7.1 EQ0 as GPIO0
        2. 8.4.7.2 EQ1 as GPIO1
        3. 8.4.7.3 EQ2/INT as GPIO2
      8. 8.4.8  CROSS
      9. 8.4.9  USB 2.0 High-Speed HOST Disconnect Detection
      10. 8.4.10 Frame Based Low Power Mode
    5. 8.5 Programming
      1. 8.5.1 I2C Target Interface
      2. 8.5.2 Register Access Protocol (RAP)
  10. 9 Register Map
    1. 9.1 TUSB2E221 Registers
  11. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application: Dual Port System
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 eUSB PHY Settings Recommendation
      3. 10.2.3 Application Curve
    3. 10.3 Power Supply Recommendations
      1. 10.3.1 Power-Up Reset
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
      2. 10.4.2 Example Layout
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.4.5 L2 State Interrupt Modes

To prevent signaling on eUSB2 while the eDSP is powered off, enable both L2 remote wake interrupt and disconnect event interrupt modes. The special remote wake sequence when L2 remote wake interrupt mode is enabled.

  • System enables interrupt USB_REMOTE_WAKE_Px.
  • Repeater is in host mode and has received a CM.L2.
  • Repeater detects wake on USB 2.0
  • Repeater asserts interrupt.
  • Repeater reflects resume on USB 2.0, but does not signal wake on eUSB2.
  • Repeater waits for eDSPr to signal start of resume with no intervening configuration, connect, or reset sequence.
  • Repeater and eDSP follow normal eUSB2 protocol to signal resume starting and ending in L0.

TUSB2E221 Timing Diagram for Wake Interrupt for HS/FSFigure 8-2 Timing Diagram for Wake Interrupt for HS/FS

The special wake on disconnect sequence when disconnect event interrupt mode is enabled

  • System enables interrupt USB_DISCONNECT_Px.
  • Repeater is in host mode and has received a CM.L2.
  • Repeater detects SE0 for disconnect on USB 2.0.
  • Repeater asserts interrupt.
  • Interrupt must be cleared prior to eDSPr reinitializing the TUSB2E221 as a host.
  • Repeater does not signal or report USB 2.0 SE0 on eUSB2.
  • Repeater waits for eDSPr to power up, which starts with port reset announcement.
  • Repeater and eDSP follow normal eUSB2 protocol, ending in unconnected state of host mode.

TUSB2E221 Timing Diagram for Disconnect Interrupt for HS/FSFigure 8-3 Timing Diagram for Disconnect Interrupt for HS/FS