SPRUJE1 July   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Key Features
      1. 2.1.1 Microcontroller
      2. 2.1.2 Power Supply
      3. 2.1.3 JTAG and Emulator
      4. 2.1.4 Expansion Connectors/Headers to Support Application Specific Add-On Boards
      5. 2.1.5 Adapter Boards
    2. 2.2 Important Usage Notes
      1. 2.2.1 Electrostatic Discharge (ESD) Compliance
      2. 2.2.2 IO Cable Length
    3. 2.3 Functional Block Diagram
    4. 2.4 Power ON/OFF Procedures
      1. 2.4.1 Power-On Procedure
      2. 2.4.2 Power-Off Procedure
      3. 2.4.3 Power Test Points
    5. 2.5 Peripheral and Major Component Description
      1. 2.5.1 UART Interface
      2. 2.5.2 JTAG Interface
      3. 2.5.3 DAC Interface
      4. 2.5.4 USB Interface
        1. 2.5.4.1 CC Controller
      5. 2.5.5 I2C Interface
      6. 2.5.6 Power
        1. 2.5.6.1 Power Requirement
        2. 2.5.6.2 Power Input
      7. 2.5.7 XDS110 Board User Setup and Configuration
        1. 2.5.7.1 JTAG/cJTAG Switch
        2. 2.5.7.2 UART and SPI Switch
      8. 2.5.8 Expansion Headers
        1. 2.5.8.1 Emulator Connector
        2. 2.5.8.2 DAC Header
        3. 2.5.8.3 Debug Header
      9. 2.5.9 Use Cases
        1. 2.5.9.1 Case 1: Non-Isolated XDS110 and controlSOM
        2. 2.5.9.2 Case 2: Isolated XDS110, controlSOM, Baseboard
  8. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 Bill of Materials (BOM)
  9. 4Compliance Information
    1. 4.1 Compliance and Certifications
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Related Documentation
    1. 6.1 Supplemental Content

2.5.2 JTAG Interface

The XDS110 board includes an emulation header and High-density connector to interface with the controlSOM. The XDS110 board includes the circuitry needed for XDS110 emulation.

The unidirectional pins of the ISO1644 digital isolator are used to isolate the JTAG signals of the XDS110 circuit from the isolated emulator connector. For implementation of cJTAG mode, the TMS signal is also routed through a slower, bidirectional input on a second ISO1644. A switch (S1) is used to select between JTAG and cJTAG mode.

XDS110ISO-EVM JTAG Interface Block Diagram Figure 2-4 JTAG Interface Block Diagram