SNAU307A May   2024  – May 2024 LMKDB1204

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1 Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2 EVM Quick Start
    1. 2.1 Hardware Setup
    2. 2.2 Software Setup
      1. 2.2.1 TICS Pro GUI Setup
      2. 2.2.2 Power Up Sequence
    3. 2.3 EVM Measurements
  8. 3 Hardware
    1. 3.1 Device Operation Modes
    2. 3.2 EVM Configuration
      1. 3.2.1 Power Supply
      2. 3.2.2 Logic Input and Outputs
      3. 3.2.3 Clock Input
      4. 3.2.4 Clock Outputs
      5. 3.2.5 Status Outputs, LEDs, and Test Points
  9. 4 Software
    1. 4.1 TICS Pro LMKDB1204 Software
      1. 4.1.1 Input
        1. 4.1.1.1 Input Selection (CLKIN_SEL Register)
        2. 4.1.1.2 Input Interface Type
        3. 4.1.1.3 Input Termination
        4. 4.1.1.4 Auto Output Disable (AOD)
        5. 4.1.1.5 LOS Event
        6. 4.1.1.6 LOS Readback
      2. 4.1.2 Device Info and EVM Setup
        1. 4.1.2.1 Device Info
        2. 4.1.2.2 EVM Setup
        3. 4.1.2.3 SMBus
      3. 4.1.3 Output
        1. 4.1.3.1 SMBus
          1. 4.1.3.1.1 Output Slew Rate Control
        2. 4.1.3.2 OE and ZOUT_SEL Pin Control
  10. 5 Implementation Results
    1. 5.1 Typical Phase Noise Characteristic
  11. 6 Hardware Design Files
    1. 6.1 Schematics
    2. 6.2 PCB Layouts
    3. 6.3 Bill of Materials (BOM)
  12. 7 Compliance Information
    1. 7.1 Compliance and Certifications
  13. 8 Additional Information
    1. 8.1 Trademarks
  14. 9 References
  15. 10Revision History

4.1.2.2 EVM Setup

The EVM setup has key pins to configure the device which can be controlled by software. The tables below outline the usage for each pin option. When Hi-Z is selected for any pin, then the onboard header jumpers can be used to force external voltages on the pins instead of controlling the pins via software.

Table 4-1 CLKPWRGD_PD#
Pin Level Function
Low LMKDB1204 power down mode.
High (default) LMKDB1204 normal operation mode.
Hi-Z When Hi-Z is selected, on-board header jumper on JP1 can be used to force external voltages on the pin.
Table 4-2 SMB_EN
Pin Level Function
Low (default) LMKDB1204 has SMBus inactive. Setting of SMB_EN pin can only be set at power-up.
High LMKDB1204 has SMBUS active. Setting of SMB_EN pin can only be set at power-up. On-board jumper headers on JP4 and JP5 need to be removed for proper operation.
Hi-Z When Hi-Z is selected, on-board header jumper on JP3 can be used to force external voltages on the pin. Setting of SMB_EN pin can only be set at power-up.
Table 4-3 CLKIN_SEL_tri
Pin Level Function
Low CLKIN0 is the input source for all outputs.
High CLKIN1 is the input source for all outputs.
Hi-Z When Hi-Z is selected, on-board header jumper on JP4 can be used to force external voltages on the pin. If selecting the mid-level of CLKIN_SEL_tri pin, (CLKIN0 is the input source for BANK0 outputs and CLKIN1 is the input source for BANK1 outputs), then on-board header jumper on JP4 must be removed and R51 must be depopulated. If SMBus mode needs to be activated after removing R51, then on-board header jumper on JP4 needs to be set to high.