SLLSFK5 June   2021 TUSB217A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Timing Requirements
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 High-Speed Boost
      2. 8.3.2 RX Sensitivity
    4. 8.4 Device Functional Modes
      1. 8.4.1 Low-Speed (LS) Mode
      2. 8.4.2 Full-Speed (FS) Mode
      3. 8.4.3 High-Speed (HS) Mode
      4. 8.4.4 High-Speed Downstream Port Electrical Compliance Test Mode
      5. 8.4.5 Shutdown Mode
      6. 8.4.6 I2C Mode
      7. 8.4.7 BC 1.2 Battery Charging Controller
    5. 8.5 TUSB217A Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Test Procedure to Construct USB High-speed Eye Diagram
          1. 9.2.2.1.1 For a Host Side Application
          2. 9.2.2.1.2 For a Device Side Application
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.1 Design Requirements

TUSB217A requires a valid reset signal as described in the Power Supply Recommendations section. The capacitor at RSTN pin is not required if a micro controller drives the RSTN pin according to recommendations.

For this design example, use the parameters shown in Table 9-1, Table 9-2 and Table 9-3.

Table 9-1 Design Parameters for 5-V Supply With High Loss System
PARAMETERVALUE(1)
VCC5 V ±10%
I2C support required in system (Yes/No)No
Edge and DC BoostRBOOSTBOOST LevelBoost Level 1:
RBOOST = 1.8 kΩ
0-Ω0
1.8 kΩ ±1%1
3.6 kΩ ± 1%2
Do Not Install (DNI)3
RX SensitivityRRXSEN1RRXSEN2RX_SEN LevelHigh RX Sensitivity Level:
RRXSEN1 = 37.5 kΩ
RRXSEN2 = 12.5 kΩ
22 kΩ - 40 kΩ (27 kΩ typical)Do Not Install (DNI)Low
Do Not Install (DNI)Do Not Install (DNI)Medium
37.5 kΩ(2)12.5 kΩHigh
(1) These parameters are starting values for a high loss system. Further tuning might be required based on specific host or device as well as cable length and loss profile. These settings are not specific to a 5 V supply system could be applicable to 3.3 V supply system as well.
(2) This resistor is needed for a 5 V supply to divide the voltage down so the RX_SEN pin voltage does not exceed 5.0 V.
Table 9-2 Design Parameters for 3.3-V Supply With Low to Medium Loss System
PARAMETERVALUE(1)
VCC3.3 V ±10%
I2C support required in system (Yes/No)No
Edge and DC BoostRBOOSTBOOST LevelBoost Level 0:
RBOOST = 0-Ω
0-Ω0
1.8 kΩ ±1%1
3.6 kΩ ±1%2
Do Not Install (DNI)3
RX SensitivityRRXSEN1RRXSEN2RX_SEN LevelMedium RX Sensitivity Level:
RRXSEN1 = DNI
RRXSEN2 = DNI
22 kΩ – 40 kΩ (27 kΩ typical)Do Not Install (DNI)Low
Do Not Install (DNI)Do Not Install (DNI)Medium
Do Not Install (DNI)22 kΩ – 40 kΩ (27 kΩ typical)High
(1) These parameters are starting values for a low to medium loss system. Further tuning might be required based on specific host or device as well as cable length and loss profile. These settings are not specific to a 3.3 V supply system could be applicable to 5 V supply system as well.
Table 9-3 Design Parameters for 2.3-V to 4.3-V VBAT Supply With Low to Medium Loss System
PARAMETERVALUE(1)
VCC2.3 V to 4.3V
I2C support required in system (Yes/No)No
Edge and DC BoostRBOOSTBOOST LevelBoost Level 0:
RBOOST = 0-Ω
0-Ω0
1.8 kΩ ±1%1
3.6 kΩ ±1%2
Do Not Install (DNI)3
RX SensitivityRRXSEN1RRXSEN2RX_SEN LevelMedium RX Sensitivity Level:
RRXSEN1 = DNI
RRXSEN2 = DNI
22 kΩ – 40 kΩ (27 kΩ typical)Do Not Install (DNI)Low
Do Not Install (DNI)Do Not Install (DNI)Medium
37.5 kΩ(2)12.5 kΩHigh
(1) These parameters are starting values for a low to medium loss system. Further tuning might be required based on specific host or device as well as cable length and loss profile. These settings are not specific to a 2.3 V – 4.3 V supply system could be applicable to 5 V supply system as well.
(2) This resistor is needed for a VBAT supply (2.3 V – 4.3 V) to divide the voltage down so the RX_SEN pin voltage does not exceed 5.0 V.