TIDUFC2 April   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 High-Voltage Generator Circuit
      2. 2.2.2 Low-Voltage Switching Mode Power Supply
      3. 2.2.3 Sitara™ MCU AM2431 Reset and Power Rail Monitoring Circuit
      4. 2.2.4 Clock Generator
      5. 2.2.5 CMOS to LVDS Driver
      6. 2.2.6 Layout Guidance
    3. 2.3 Highlighted Products
      1. 2.3.1 TX7516
      2. 2.3.2 TMU9832
      3. 2.3.3 AM2431
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 TIDA-010256 PCB Overview
      2. 3.1.2 TIDA-010256 Connector Settings
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
    4. 3.4 Test Results
      1. 3.4.1 High-Voltage Power Supply Output Ripple
      2. 3.4.2 Output Waveform
      3. 3.4.3 Thermal Test
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks

2.2.5 CMOS to LVDS Driver

The synchronous trigger signal TR_BF_SYNC for TX7516 only supports LVDS input, while the Sitara MCU (AM2431) only outputs CMOS or Low-Voltage Complementary Metal Oxide Semiconductor (LVCMOS). Figure 2-15 shows the resulting required external LVCMOS and LVCMOS-to-LVDS translation circuit.


TIDA-010256 CMOS to LVDS Driver Circuit

Figure 2-15 CMOS to LVDS Driver Circuit

The TR_BF_SYNC signal on the TX7516 supports internal LVDS terminal resistance configuration, defaulting to 100Ω.