ZHCSIP0G November   2009  – November 2022 CDC3RL02

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  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 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Low Additive Noise
      2. 8.3.2 Regulated 1.8-V Externally Available I/O Supply
      3. 8.3.3 Ultra-Small 8-bump YFP 0.4-mm Pitch WCSP Package
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Input Clock Squarer
      2. 9.1.2 Output Stage
      3. 9.1.3 LDO
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 接收文档更新通知
    2. 10.2 支持资源
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 术语表
  11. 11Mechanical, Packaging, and Orderable Information

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9.2.2 Detailed Design Procedure

The designer must make sure that all parameters are within the ranges specified in Section 7.3.

Each device which receives a clock output from the CDC3RL02 should have the CLK request pin connected to the appropriate CLK_REQ pin on the CDC3RL02. This will enable the output buffer when a device requests the clock signal.

It is possible to have a control the outputs of the clock by using a GPIO from a controller to control the CLK_REQ pins.

If one of the outputs is unused, then tie the CLK_REQ and CLK_OUT pins to ground. If the user wants a CLK_OUT pin always enabled, it is acceptable to tie the paired CLK_REQ pin to an external 1.8-V source (not VLDO because the LDO output is not enabled until at least one CLK_REQ pin is high).