Texas Instruments XDS110ISO-EVM

Overview

XDS110ISO-EVM from Texas Instruments is an isolated plug-in evaluation module designed for real-time debug and flash programming of C2000™ and Sitara™ controlSOMs. It features dual connectivity via a 16-pin electrically isolated emulator connector and a 120-pin non-isolated high-density connector, supports JTAG/cJTAG/SWD protocols, includes a full-duplex isolated UART, and integrates four-channel DAC outputs for analog stimulus generation.

For engineers reviewing the XDS110ISO-EVM datasheet, XDS110ISO-EVM pinout, XDS110ISO-EVM application, or XDS110ISO-EVM equivalent, this module serves as a production-ready emulation interface enabling safe, isolated debugging in high-noise industrial motor control and power electronics systems where ground loop elimination and signal integrity are critical.

Technical Context

The XDS110ISO-EVM implements hardware-level galvanic isolation using ISO1644DWR (UART), ISO7741DBQR (SPI/I²C), and discrete digital isolators on JTAG lines to separate host PC-side logic from target controlSOM voltage domains. Its embedded MSP432E401Y microcontroller manages emulation protocol translation, USB-C power negotiation via TUSB320LIRWBR, and peripheral routing including SPI-driven DAC128S085CIMT for analog output generation.

It supports dual debug modes-4-wire JTAG and 2-wire cJTAG-selected by physical SPDT switch S1, and configurable UART/SPI signal routing to the isolated emulator connector via DIP switch S2. Power is delivered exclusively through USB Type-C (J5) with negotiated 5V/3A capability, regulated to 3.3V (TLV70333DBVR) and 4.1V (LM4120IM5-4.1/NOPB) rails for MCU and DAC reference respectively.

Key Specifications

Availability

XDS110ISO-EVM is available at Aetrix Electronics and suitable for industrial motor drives, power converter development, embedded control system validation, and real-time firmware debugging requiring stable component supply and traceable sourcing.

Supply support for XDS110ISO-EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies, with leadership in industrial, automotive, and communications markets.

The XDS110ISO-EVM belongs to TI's XDS110 emulator platform family, engineered specifically to deliver robust, isolated debug infrastructure for C2000 and Sitara-based control systems in safety-critical and noise-sensitive environments.

FAQ

What is the primary function of the XDS110ISO-EVM?

The XDS110ISO-EVM is a Texas Instruments evaluation module that provides isolated real-time debug and flash programming capability for C2000 and Sitara controlSOMs. It enables secure, ground-loop-free JTAG/cJTAG/SWD communication and includes isolated UART, SPI, and I²C interfaces. The XDS110ISO-EVM integrates a four-channel DAC for analog stimulus and uses discrete digital isolators to protect both host and target systems during development.

Does the XDS110ISO-EVM support both isolated and non-isolated connection modes?

Yes, the XDS110ISO-EVM supports two distinct physical connection modes: electrically isolated debugging via its 16-pin emulator connector (J3), and non-isolated debugging via the 120-pin high-density connector (J1). The isolated path routes JTAG, UART, SPI, and I²C through TI ISO-series digital isolators, while the non-isolated path connects directly to the controlSOM. Both modes are supported simultaneously in different system configurations, and the XDS110ISO-EVM documentation confirms compatibility with C2000 and Sitara controlSOMs in either mode.

Which microcontroller is used onboard the XDS110ISO-EVM?

The XDS110ISO-EVM uses the MSP432E401YTPDT - a 128-pin TQFP Arm® Cortex®-M4F microcontroller from TI's SimpleLink™ family. It operates at up to 120 MHz, integrates Ethernet MAC, USB, and rich analog/digital peripherals, and serves as the core emulation controller managing USB-C power negotiation, protocol translation, and peripheral routing. This MCU is explicitly listed in Section 2.1.1 of the XDS110ISO-EVM User's Guide as the onboard processor.

How does the XDS110ISO-EVM handle USB power negotiation and delivery?

The XDS110ISO-EVM uses the TUSB320LIRWBR Configuration Channel (CC) controller to negotiate USB Type-C power delivery up to 5V/3A. The CC controller detects cable attachment, orientation, and source capability, advertising current levels (default, 1.5A, or 3A) via OUT1/OUT2 GPIO pins. A green LED indicates 3A configuration status. All power regulation is performed onboard: TLV70333DBVR generates 3.3V for the MSP432E401Y and isolators, and LM4120IM5-4.1/NOPB provides a precise 4.1V DAC reference - both derived from the negotiated 5V input.

What are the key isolation components used on the XDS110ISO-EVM?

The XDS110ISO-EVM employs TI's ISO1644DWR for bidirectional UART isolation, ISO7741DBQR for SPI and I²C isolation, and discrete unidirectional digital isolators for JTAG signal isolation (TMS, TCK, TDI, TDO). These components provide reinforced galvanic isolation rated per IEC 60747-17, enabling safe operation between host PC and high-voltage target systems. The 16-pin emulator connector (J3) carries only isolated signals, and the XDS110ISO-EVM User's Guide explicitly confirms isolation coverage across JTAG, UART, SPI, and I²C paths.