SNAU287 November   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
  6. 2Hardware
    1. 2.1 Evaluation Setup Requirement
    2. 2.2 Configuring the EVM
      1. 2.2.1 Configuring the Power Supply
      2. 2.2.2 Configuring the Control Pins
      3. 2.2.3 Configuring the Clock Outputs
      4. 2.2.4 Using the USB Interface Connection
      5. 2.2.5 EVM Quick Start Guide
    3. 2.3 Modes of Operation
  7. 3Software
    1. 3.1 Using TICS Pro with the LMK3H0102EVM
      1. 3.1.1 Using the LMK3H0102 Wizard
        1. 3.1.1.1 Frequency Plan
        2. 3.1.1.2 Output Formats
        3. 3.1.1.3 Output Enable Pin
        4. 3.1.1.4 OTP Options
        5. 3.1.1.5 Review
        6. 3.1.1.6 Design Report
      2. 3.1.2 Live Debugger
        1. 3.1.2.1 FODs
        2. 3.1.2.2 Outputs
        3. 3.1.2.3 Others
      3. 3.1.3 Programming
        1. 3.1.3.1 Registers
        2. 3.1.3.2 OTP Configuration
      4. 3.1.4 Help
        1. 3.1.4.1 Contact TI
    2. 3.2 Using TI’s USB2ANY Module for In-System Programming of the LMK3H0102
      1. 3.2.1 USB2ANY Board Connections
      2. 3.2.2 Ordering a USB2ANY Module
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  9. 5Additional Information
    1.     Trademarks
  10. 6Related Documentation

2.2.1 Configuring the Power Supply

The LMK3H102 has one VDD (analog/digital core) supply pin that operates from 1.8 V to 3.3 V (± 5%) and two VDDO (output) supply pins that operate from 1.8 V to 3.3 V (± 5%). The VDD and VDDO power planes on the EVM can be powered from a single supply or dual supplies. Each plane can be powered directly from an external supply, an on-board DC/DC converter, or an on-board LDO. Though the LMK3H0102 already has integrated LDO regulators for excellent Power Supply Ripple Rejection (PSRR), the EVM's on-board regulators (U3 & U4) allows the user to power the EVM using a higher supply voltage, such as 5 V, and enable jumper selection of the VDDO voltage. TheLMK3H0102EVM can be powered from USB without the need for an external supply, as the 5 V supply to the on-board regulators can be powered by the USB port. Figure 3-2 shows how the external supply or the on-board regulators can be independently routed to the VDD and VDDO planes by configuring the power terminals and jumpers.

Power SMA port J18 is the main power terminal block for the EVM for connecting power from an external power supply and GND. J14 provides an alternative connector style for applying external power to the LMK3H0102EVM.

GUID-20230413-SS0I-3M00-9SMR-F4VD8H4LVKQ2-low.svg Figure 2-2 LMK3H0102EVM Power Jumpers

Table 3-1 summarizes the EVM power configurations to connect and route power to the VDD and VDDO supply domains of the LMK3H0102. Refer to Schematics for more details.

Table 2-1 Power Configurations
Connection Name On-Board Regulators
LMK3H0102 VDD Pins VDD 3.3 V (Default)
LMK3H0102 VDDO Pins VDDO_x 3.3 V (Default)
J13 DC_SRC
  • Tie pins 1 and 2 (Default): Selects 5 V from USB as source for on-board regulators
  • Tie pins 3 and 4: Selects EXT_DC as source for on-board regulators
J14 EXT_DC
  • Open (Default)
  • Pin 1: Connect to 5 V supply
  • Pin 2: Connect to GND supply
J15 DCDC_FB
  • Tie pins 1 and 2: Set DC/DC output to 3.3 V
  • Tie pins 3 and 4: Set DC/DC output to 2.5 V
  • Tie pins 5 and 6 (Default): Set DC/DC output to 1.8 V
J16 VDD_SEL
  • Tie pins 1 and 2 (Default): Set VDD to the DC/DC output
  • Tie pins 3 and 4: Set VDD to the LDO output
  • Tie pins 5 and 6: Set VDD to the J18 voltage
J17 LDO_FB
  • Tie pins 1 and 2: Set LDO output to 3.3 V
  • Tie pins 3 and 4: Set LDO output to 2.5 V
  • Tie pins 5 and 6: Set LDO output to 1.8 V
J18 EXT_VDD Alternative SMA connection to pin 5 of J16 and J23
J23 VDDO_SEL
  • Tie pins 1 and 2 (Default): Set VDDO to the DC/DC output
  • Tie pins 3 and 4: Set VDDO to the LDO output
  • Tie pins 5 and 6: Set VDDO to the J18 voltage