TIDUFB0 July   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Input Devices (DALI 103)
    2. 1.2 Control Gear (DALI 102)
    3. 1.3 Control Devices (Application Controllers)
    4. 1.4 Introduction
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Manchester Encoding
      2. 2.2.2 Using Opto-Emulators Instead of Optocouplers
    3. 2.3 Highlighted Products
      1. 2.3.1 MSPM0G350x
      2. 2.3.2 ISOM8111
        1. 2.3.2.1 ISOM8111 Features
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Software Requirements
      1. 3.2.1 DALI Stack Layer
    3. 3.3 Test Setup
      1. 3.3.1 Configuring the PIR
    4. 3.4 Test Results
      1. 3.4.1 Event Message When PIR Detects a Motion
      2. 3.4.2 Event Message Generation Through Report Timer
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Authors

1 System Description

The DALI bus carries DALI power and data on the same pair of wires. Each DALI subnet can have 64 control gears and 64 control devices. Control gears provide power to LEDs and other light sources. Control devices include application controllers (which make decisions and send commands), and input devices such as sensors, switches, and push-button devices. A bus power supply is required, providing up to 250mA and typically 16V to the DALI bus. A gateway to an external network is often integrated into an application controller.