TIDUC26A April   2022  – April 2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Inductive Touch Buttons
      2. 2.2.2 Sensor Coil Placement
      3. 2.2.3 Collecting Data from Multiple LDCs
      4. 2.2.4 Magnetic Dial Implementation
      5. 2.2.5 CORDIC Algorithm
    3. 2.3 Highlighted Products
      1. 2.3.1 LDC3114-Q1
      2. 2.3.2 TMAG5273
      3. 2.3.3 DRV2605
      4. 2.3.4 TLV75518
      5. 2.3.5 TCA9534
      6. 2.3.6 PCA9543
      7. 2.3.7 Sensor Control Board
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Firmware and Programming
      1. 3.1.1 Operational Mode 1
      2. 3.1.2 Operational Mode 2
      3. 3.1.3 Operational Mode 3
    2. 3.2 Test Setup
    3. 3.3 Test Results
      1. 3.3.1 ABS Force Response
      2. 3.3.2 ABS Gain Corrected
      3. 3.3.3 Nylon Force Response
      4. 3.3.4 Nylon Gain Corrected
  10. 4Hardware Components
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6Revision History

2.1 Block Diagram

Figure 2-1 shows the block diagram for this reference design.

GUID-20220302-SS0I-TTXR-PLBV-GR9X4ZNHQ9DV-low.svg Figure 2-1 TIDA-060039 Block Diagram

The Sensor Control Board (SCB) powers and controls this reference design. The SCB gets power from a USB cable and provides 5 V and 3.3 V to the reference design board. The housing on the reference design provides eight inductive touch buttons and a magnetic push dial. The touch buttons have three different modes of operation that can be changed by pressing in the dial. In the default mode, the buttons give a digital output on the LEDs corresponding to which button was pressed. In the second mode, the LEDs showcase how hard any given button is pressed by lighting up more LEDs for a harder press. The third mode connects to a PC and streams data from half of the buttons to a GUI. During all modes of operation, the angle of the magnetic dial is read and displayed on the circular ring of LEDs.