SNAS862B April   2025  – October 2025 LMK3H0102-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 I2C Interface Specification
  7. 6 Parameter Measurement Information
    1. 6.1 Output Format Configurations
    2. 6.2 Differential Voltage Measurement Terminology
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Device Block-Level Description
      2. 7.3.2 Device Configuration Control
      3. 7.3.3 OTP Mode
      4. 7.3.4 I2C Mode
    4. 7.4 Device Functional Modes
      1. 7.4.1 Fail-Safe Inputs
      2. 7.4.2 Fractional Output Dividers
        1. 7.4.2.1 FOD Operation
        2. 7.4.2.2 Edge Combiner
        3. 7.4.2.3 Digital State Machine
        4. 7.4.2.4 Spread-Spectrum Clocking
      3. 7.4.3 Output Behavior
        1. 7.4.3.1 Output Format Selection
          1. 7.4.3.1.1 Output Format Types
            1. 7.4.3.1.1.1 LP-HCSL Termination
        2. 7.4.3.2 Output Slew Rate Control
        3. 7.4.3.3 REF_CTRL Operation
      4. 7.4.4 Output Enable
        1. 7.4.4.1 Output Enable Control
        2. 7.4.4.2 Output Enable Polarity
        3. 7.4.4.3 Output Disable Behavior
      5. 7.4.5 Device Default Settings
    5. 7.5 Programming
      1. 7.5.1 I2C Serial Interface
      2. 7.5.2 One-Time Programming Sequence
  9. 8 Device Registers
    1. 8.1 Register Maps
      1. 8.1.1  R0 Register (Address = 0x0) [reset = 0x0861/0x0863]
      2. 8.1.2  R1 Register (Address = 0x1) [reset = 0x5599]
      3. 8.1.3  R2 Register (Address = 0x2) [reset = 0xC28F]
      4. 8.1.4  R3 Register (Address = 0x3) [reset = 0x1801]
      5. 8.1.5  R4 Register (Address = 0x4) [reset = 0x0000]
      6. 8.1.6  R5 Register (Address = 0x5) [reset = 0x0000]
      7. 8.1.7  R6 Register (Address = 0x6) [reset = 0x0AA0]
      8. 8.1.8  R7 Register (Address = 0x7) [reset = 0x6503]
      9. 8.1.9  R8 Register (Address = 0x8) [reset = 0xC28F]
      10. 8.1.10 R9 Register (Address = 0x9) [reset = 0x3066]
      11. 8.1.11 R10 Register (Address = 0xA) [reset = 0x0010]
      12. 8.1.12 R11 Register (Address = 0xB) [reset = 0x4000]
      13. 8.1.13 R12 Register (Address = 0xC) [reset = 0x6800]
      14. 8.1.14 R146 Register (Address = 0x92) [reset = 0x0000]
      15. 8.1.15 R147 Register (Address = 0x93) [reset = 0x0000]
      16. 8.1.16 R148 Register (Address = 0x94) [reset = 0x0000]
      17. 8.1.17 R238 Register (Address = 0xEE) [reset = 0x0000]
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Application Block Diagram Examples
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
        1. 9.2.3.1 Example: Changing Output Frequency
        2. 9.2.3.2 Crosstalk
      4. 9.2.4 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Power-Up Sequencing
      2. 9.3.2 Decoupling Power Supply Inputs
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

7.4.4.1 Output Enable Control

This device supports synchronous Output Enable (OE). Synchronous OE means there is no glitch on the outputs when OE signal is asserted or deasserted.

The following table shows the enabling and disabling outputs through pin configuration and I2C. Note that the OE pin must be low and OE bit must be "1" for the output to be active. The output enable bits are OUT0_EN (R7[1]) and OUT1_EN (R7[8]).

Table 7-9 OE Functionality
OE PinOE Pin Polarity

Software Output Enable

OUTx_EN

OUTx
HighActive low0Off
HighActive low1Off
LowActive low0Off
LowActive low1Running
HighActive high0Off
HighActive high1Running
LowActive high0Off
LowActive high1Off