SNAU283 October   2022

 

  1.   Abstract
  2.   Trademarks
  3. 1Evaluation Board Kit Contents
  4. 2Quick Start
    1. 2.1 Quick Start Description
      1. 2.1.1 Clock Outputs Page Description
      2. 2.1.2 TICS Pro Tips
  5. 3PLL Loop Filters and Loop Parameters
    1. 3.1 PLL1 Loop Filter
    2. 3.2 PLL2 Loop Filter
  6. 4Default TICS Pro Mode
  7. 5Using TICS Pro to Program the LMK04368-EP
    1. 5.1 Start TICS Pro Application
    2. 5.2 Select Device
    3. 5.3 Program the Device
    4. 5.4 Restoring a Default Mode
    5. 5.5 Visual Confirmation of Frequency Lock
    6. 5.6 Enable Clock Outputs
  8. 6Evaluation Board Inputs and Outputs
  9. 7Recommended Test Equipment
  10. 8Schematics
  11. 9Bill of Materials
  12.   A USB2ANY Firmware Upgrade
  13.   B TICS Pro Usage
    1. 11.1  Communication Setup
    2. 11.2  User Controls
    3. 11.3  Raw Registers Page
    4. 11.4  Set Modes Page
    5. 11.5  Holdover Page
    6. 11.6  CLKinX Control Page
    7. 11.7  PLL1 and 2 Page
    8. 11.8  SYNC / SYSREF Page
    9. 11.9  Clock Outputs Page
    10. 11.10 Other Page
    11. 11.11 Burst Mode Page

11.8 SYNC / SYSREF Page

The SYNC / SYSREF page allows some mode set buttons for JESD204B features. The SYNC dividers button will stop all SYNC inputs, set normal SYNC mode, enable all dividers for SYNC, issue a SYNC by toggling SYNC_POL, set all dividers to ignore SYNC, then return any other changed parameter to its original state. This is a nice feature to ensure all outputs are synchronized together or to be run after changing the digital delay value which requires a SYNC to update. This functionality is also available on any other page through the toolbar as SYNC Dividers.

Note:

To use SYNC or SYSREF, ensure that SYNC_EN = 1. To use SYSREF in continuous, pulser, or reclocked modes, be sure SYSREF_PD = 0.

The SCLKX_Y_DIS_MODE bits allow the clock outputs to be disabled or set to a low state. Values 1 and 2 are only conditionally set by the SYSREF_GBL_PD bit, therefore it is possible to power up/down several SYSREF outputs by programming only one register. When changing between Active (0x00) and Conditional Low (0x01) states, keep the SYSREF_CLR = 1 during the transition to prevent glitch pulses from the SYSREF output.

GUID-20220914-SS0I-KPPG-ZNDF-FJBKHCNQHNSN-low.png Figure 11-8 TICS Pro - SYNC / SYSREF Page