SNAS786B July   2020  – October 2021 CDCE6214-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (cont.)
  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  EEPROM Characteristics
    6. 7.6  Reference Input, Single-Ended Characteristics
    7. 7.7  Reference Input, Differential Characteristics
    8. 7.8  Reference Input, Crystal Mode Characteristics
    9. 7.9  General-Purpose Input Characteristics
    10. 7.10 Triple Level Input Characteristics
    11. 7.11 Logic Output Characteristics
    12. 7.12 Phase Locked Loop Characteristics
    13. 7.13 Closed-Loop Output Jitter Characteristics
    14. 7.14 Input and Output Isolation
    15. 7.15 Buffer Mode Characteristics
    16. 7.16 PCIe Spread Spectrum Generator
    17. 7.17 LVCMOS Output Characteristics
    18. 7.18 LP-HCSL Output Characteristics
    19. 7.19 LVDS Output Characteristics
    20. 7.20 Output Synchronization Characteristics
    21. 7.21 Power-On Reset Characteristics
    22. 7.22 I2C-Compatible Serial Interface Characteristics
    23. 7.23 Timing Requirements, I2C-Compatible Serial Interface
    24. 7.24 Power Supply Characteristics
    25. 7.25 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Reference Inputs
    2. 8.2 Outputs
    3. 8.3 Serial Interface
    4. 8.4 PSNR Test
    5. 8.5 Clock Interfacing and Termination
      1. 8.5.1 Reference Input
      2. 8.5.2 Outputs
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Reference Block
        1. 9.3.1.1 Zero Delay Mode, Internal and External Path
      2. 9.3.2 Phase-Locked Loop (PLL)
        1. 9.3.2.1 PLL Configuration and Divider Settings
        2. 9.3.2.2 Spread Spectrum Clocking
        3. 9.3.2.3 Digitally-Controlled Oscillator/ Frequency Increment and Decrement - Serial Interface Mode and GPIO Mode
      3. 9.3.3 Clock Distribution
        1. 9.3.3.1 Glitchless Operation
        2. 9.3.3.2 Divider Synchronization
        3. 9.3.3.3 Global and Individual Output Enable
      4. 9.3.4 Power Supplies and Power Management
      5. 9.3.5 Control Pins
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation Modes
        1. 9.4.1.1 Fall-Back Mode
        2. 9.4.1.2 Pin Mode
        3. 9.4.1.3 Serial Interface Mode
    5. 9.5 Programming
      1. 9.5.1 I2C Serial Interface
      2. 9.5.2 EEPROM
        1. 9.5.2.1 EEPROM - Cyclic Redundancy Check
        2. 9.5.2.2 Recommended Programming Procedure
        3. 9.5.2.3 EEPROM Access
          1. 9.5.2.3.1 Register Commit Flow
          2. 9.5.2.3.2 Direct Access Flow
        4. 9.5.2.4 Register Bits to EEPROM Mapping
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 Power-Up Sequence
    2. 11.2 Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
      2. 13.1.2 Device Nomenclature
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGE|24
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.5.1 I2C Serial Interface

The CDCE6214-Q1 ultra-low power clock generator provides an I2C-compatible serial interface for register and EEPROM access. The device is compatible to standard-mode I2C at 100 kHz and the fast-mode I2C at 400-kHz clock frequency.

  1. In fall-back mode, I2C slave address = 67h.
  2. In other modes, I2C slave address = 68h (Default).
  3. The LSB bit of the device can be programmed in the EEPROM. For example, if I2C_A0 is programmed H in Page 0 of EEPROM, setting HW_SW_CTRL=0 would set I2C address as 69h.
  4. Two devices with EEPROM + 1 device in fall-back mode can be used on the same I2C bus with addresses 67h, 68h and 69h.
Table 9-19 I2C-Compatible Serial Interface, Slave Address Byte (16)(17)
76543210
Slave Address [6:0]R/W# Bit
Table 9-20 I2C-Compatible Serial Interface, Programmable Slave Address (18)(19)
A6A5A4A3A2A1A0HW_SW_SELDESCRIPTION
1100111MIDFall-back Mode
110100I2C_A0LOWEEPROM Page 0
110100I2C_A0HIGHEEPROM Page 1

The serial interface uses the following protocol as shown in Figure 9-11. The slave address is followed by a word-wide register offset and a word-wide register value.

GUID-0EF6AF12-4D7B-4B11-8D4F-3F435A16C67A-low.gifFigure 9-11 I2C-Compatible Serial Interface, Supported Protocol
16. The slave address consists of two sections. The hardwired MSBs A[6:1] and the software-selectable LSBs A[0].
17. The R/W# bit indicates a read (1) or a write (0) transfer.
18. In EEPROM Page 0, Serial Interface is not available. Device configured in Pin Mode
19. In EEPROM Page 1, I2C_A0 is programmed as 0, Expected Slave Address is 68h