TIDUF41A October   2023  – June 2024

 

  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
    3. 2.3 Highlighted Products
      1. 2.3.1 TIOL112
      2. 2.3.2 MSPM0L1306
  9. 3Hardware, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
    3. 3.3 Test Results
      1. 3.3.1 TCD_PHYL_INTF_TRENHIGH and TCD_PHYL_INTF_TRENLOW
      2. 3.3.2 TCD_PHYL_INTF_UARTTRANSDELAY
      3. 3.3.3 TCD_PHYL_INTF_RESPONSETIME
      4. 3.3.4 TCD_PHYL_INTF_ISIRD
  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
  11. 5About the Author
  12. 6Revision History

3.3.1 TCD_PHYL_INTF_TRENHIGH and TCD_PHYL_INTF_TRENLOW

To measure the tREN time, the device is connected to a 24V power supply. The CQ line is connected to a voltage divider and a signal generator, generating the wake pulse. Figure 3-14 shows this connection. For measuring tREN when the C/Q line is initially high, R1 = 1.2kΩ and R2 = 390Ω, when C/Q is low, R1= 680Ω and R2 = 1.2kΩ.

TIDA-010263 Test Setup tREN Figure 3-14 Test Setup tREN

The timings of the tREN measurements with a high line are observed in the two scope shots below.

TIDA-010263 tREN High Measurement
Black = C/Q Line, Red = TIOL112 enable signal, Green = TIOL112 Wake signal
Figure 3-15 tREN High Measurement
TIDA-010263 tREN High Measurement Zoomed in After Wake Pulse
Black = C/Q Line, Red = TIOL112 enable signal, Green = TIOL112 Wake signal
Figure 3-16 tREN High Measurement Zoomed in After Wake Pulse

The next two scope shots show the results for a C/Q line that is initially low.

TIDA-010263 tREN Low Measurement
Black = C/Q Line, Red = TIOL112 enable signal, Green = TIOL112 Wake signal
Figure 3-17 tREN Low Measurement
TIDA-010263 tREN Low Measurement Zoomed in After Wake Pulse
Black = C/Q Line, Red = TIOL112 enable signal, Green = TIOL112 Wake signal
Figure 3-18 tREN Low Measurement Zoomed in After Wake Pulse