ZHCSGV7F July   2017  – January 2024 CDCI6214

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Device Comparison
  6. Pin Configuration and Functions
  7. 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  EEPROM Characteristics
    6. 6.6  Reference Input, Single-Ended and Differential Mode Characteristics (REFP, REFN, FB_P, FB_N)
    7. 6.7  Reference Input, Crystal Mode Characteristics (XIN, XOUT)
    8. 6.8  General-Purpose Input and Output Characteristics (GPIO[4:1], SYNC/RESETN)
    9. 6.9  Triple Level Input Characteristics (EEPROMSEL, REFSEL)
    10. 6.10 Reference Mux Characteristics
    11. 6.11 Phase-Locked Loop Characteristics
    12. 6.12 Closed-Loop Output Jitter Characteristics
    13. 6.13 Output Mux Characteristics
    14. 6.14 LVCMOS Output Characteristics
    15. 6.15 HCSL Output Characteristics
    16. 6.16 LVDS DC-Coupled Output Characteristics
    17. 6.17 Programmable Differential AC-Coupled Output Characteristics
    18. 6.18 Output Skew and Delay Characteristics
    19. 6.19 Output Synchronization Characteristics
    20. 6.20 Timing Characteristics
    21. 6.21 I2C-Compatible Serial Interface Characteristics (SDA/GPIO2, SCL/GPIO3)
    22. 6.22 Timing Requirements, I2C-Compatible Serial Interface (SDA/GPIO2, SCL/GPIO3)
    23. 6.23 Power Supply Characteristics
    24. 6.24 Typical Characteristics
  8. Parameter Measurement Information
    1. 7.1 Parameters
      1. 7.1.1 Reference Inputs
      2. 7.1.2 Outputs
      3. 7.1.3 Serial Interface
      4. 7.1.4 Power Supply
  9. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Reference Block
        1. 8.3.1.1 Input Stages
          1. 8.3.1.1.1 Crystal Oscillator
          2. 8.3.1.1.2 LVCMOS
          3. 8.3.1.1.3 Differential AC-Coupled
        2. 8.3.1.2 Reference Mux
        3. 8.3.1.3 Reference Divider
          1. 8.3.1.3.1 Doubler
        4. 8.3.1.4 Bypass-Mux
        5. 8.3.1.5 Zero Delay, Internal and External Path
      2. 8.3.2 Phase-Locked Loop
      3. 8.3.3 Clock Distribution
        1. 8.3.3.1 Output Channel
        2. 8.3.3.2 Divider Glitch-Less Update
      4. 8.3.4 Control Pins
        1. 8.3.4.1 Global and Individual Output Enable: OE and OE_Y[4:1]
      5. 8.3.5 Operation Modes
      6. 8.3.6 Divider Synchronization - SYNC
      7. 8.3.7 EEPROM - Cyclic Redundancy Check
      8. 8.3.8 Power Supplies
        1. 8.3.8.1 Power Management
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pin Mode
      2. 8.4.2 Serial Interface Mode
        1. 8.4.2.1 Fall-Back Mode
    5. 8.5 Programming
      1. 8.5.1 Recommended Programming Procedure
      2. 8.5.2 EEPROM Access
      3. 8.5.3 Device Defaults
  10. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Do's and Don'ts
    4. 9.4 Initialization Setup
    5. 9.5 Power Supply Recommendations
      1. 9.5.1 Power-Up Sequence
      2. 9.5.2 De-Coupling
    6. 9.6 Layout
      1. 9.6.1 Layout Guidelines
      2. 9.6.2 Layout Examples
  11. 10Register Maps
    1. 10.1 CDCI6214 Registers
    2. 10.2 EEPROM Map
  12. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
      2. 11.1.2 Device Nomenclature
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

说明

CDCI6214 器件是一款超低功耗时钟发生器。此器件在锁相环的两个独立基准输入之间进行选择,并在可配置的差分输出通道上产生多达四个不同的频率,还在 LVCMOS 输出通道上生成参考时钟。

四个输出通道中的每个通道都有一个可配置的整数分频器。通过与输出多路复用器结合,这样可产生五种不同的频率。时钟分配分频器通过确定性方式进行复位,以便实现干净的时钟门控以及无毛刺更新功能。可通过灵活的断电选项优化器件以便在工作和待机模式中实现最低功耗。通常,四路 156.25MHz LVDS 输出在 1.8V 时的功耗为 150mW。100MHz HCSL 输出的典型 RMS 抖动为 386fs,可提高 PCIe 应用的系统裕度。

CDCI6214 由内部寄存器进行配置。可通过与 I2C 兼容的串行接口和内部 EEPROM 访问这些寄存器。

CDCI6214 采用小型封装并具有超低功耗,可根据单个基准实现高性能时钟树。CDCI6214 具有工厂和用户可编程的 EEPROM,该时钟特性方便易用,可瞬时启动,并能实现低功耗。

封装信息
器件型号 封装(1) 封装尺寸(3)
CDCI6214 RGE(VQFN,24) 4.00mm x 4.00mm
有关所有可选封装,请参阅 节 13
四路 LVDS 输出,156.25MHz(含晶振参考)。
封装尺寸(长 × 宽)为标称值,并包括引脚(如适用)。
GUID-12A151EB-A070-4389-B78F-E3FCC3CE01D3-low.gif CDCI6214 应用示例