ZHCS144I March   2011  – March 2016 TUSB9261

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and 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 DC Electrical Characteristics for 3.3-V Digital I/O
    6. 6.6 SuperSpeed USB Power Consumption
    7. 6.7 High-Speed USB Power Consumption
    8. 6.8 Oscillator Specification
    9. 6.9 Crystal Specification
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operation
        1. 7.3.1.1 General Functionality
        2. 7.3.1.2 Firmware Support
        3. 7.3.1.3 GPIO/PWM LED Designations
        4. 7.3.1.4 Power-Up and Reset Sequence
      2. 7.3.2 Clock Connections
        1. 7.3.2.1 Clock Source Requirements
        2. 7.3.2.2 Clock Source Selection Guide
    4. 7.4 Device Functional Modes
      1. 7.4.1 VBUS Power
      2. 7.4.2 External Power
      3. 7.4.3 External Voltage Regulator
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 PWM Terminals
        2. 8.2.2.2 JTAG Interface
        3. 8.2.2.3 Voltage Regulator Schematic
        4. 8.2.2.4 SPI
  9. 9 Power Supply Recommendations
    1. 9.1 Digital Supplies 1.1-V and 3.3-V
    2. 9.2 Analog Supplies 1.1-V and 3.3-V
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 High-Speed Differential Routing
      2. 10.1.2 SuperSpeed Differential Routing
      3. 10.1.3 SATA Differential Routing
    2. 10.2 Layout Examples
  11. 11器件和文档支持
    1. 11.1 社区资源
    2. 11.2 商标
    3. 11.3 静电放电警告
    4. 11.4 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9 Power Supply Recommendations

9.1 Digital Supplies 1.1-V and 3.3-V

The TUSB9261 requires a 1.1-V and 3.3-V digital power source.

The 1.1-V terminals are named VDD11. These terminals supply power to the digital core. The 1.1-V core allows for a significant reduction in both power consumption and logic switching noise.

The 3.3-V terminals are named VDD33 and supply power to most of the input and output cells. Both VDD11 and VDD33 supplies must have 0.1-μF bypass capacitors to VSS (ground) to ensure proper operation. One capacitor per power terminal is sufficient and should be placed as close to the terminal as possible to minimize trace length. TI also recommends smaller value capacitors like 0.01-μF on the digital supply terminals.

When placing and connecting all bypass capacitors, follow high-speed board design rules.

9.2 Analog Supplies 1.1-V and 3.3-V

TI recommends a Pi filter on all analog power terminals to minimize circuit noise. These filters can be combined on a per-rail basis for a total of two (VDDA11 / VDDA11_USB2) + (VDDA33).

Analog power terminals must have a 1-μF and a 10-μF bypass capacitor connected to VSSA (ground) to ensure proper operation. Place the capacitor as close as possible to the associated terminal to minimize trace length. TI also recommends smaller value capacitors such as 0.1-μF and 0.01-μF on the analog supply terminals.