. It is an evolution of the original XDS100, designed to provide developers with a cost-effective solution for debugging and programming a wide range of TI processors, including TMS320C28x, ARM9, and Cortex-M3 cores, directly within the Code Composer Studio (CCS) environment. Core Architecture and Components
This is the most critical IC. In the schematic, you will see:
This is the section of the schematic that hardware engineers study most closely. The JTAG interface consists of four standard signals:
Based on the schematic, you will need:
No. The FTDI alone cannot generate the correct JTAG timing and level shifting for TI devices. The CPLD is essential.
Always double-check pinouts and CPLD firmware versions. One wrong connection can destroy both the emulator and your target DSP. Happy debugging!
The is one of the most widely used JTAG emulators for Texas Instruments (TI) DSPs (Digital Signal Processors) and ARM-based microcontrollers, particularly the Stellaris and Hercules families. For years, it has been the go-to low-cost debug probe for developers working with Code Composer Studio (CCS). Xds100v2 Schematic
Before dissecting the schematic, it is essential to understand what the XDS100v2 represents. The "XDS" stands for . It is a class of debug probes designed by TI. The "v2" designation indicates the second generation of this particular entry-level emulator.
When you search for "XDS100v2 schematic," you will encounter different versions. Here’s how to identify them:
Understanding the XDS100v2 schematic is essential for engineers looking to integrate debugging capabilities directly onto their custom hardware or for those attempting to repair an existing emulator. Core Components of the XDS100v2 Design In the schematic, you will see: This is
If the computer doesn't see the device, check the 12MHz oscillator and the USB differential pair routing (D+ and D-).
Let’s walk through the major blocks in the XDS100v2 schematic.
If your target system operates in a high-voltage environment, consider adding digital isolators (like the ISO72xx series) between the FTDI chip and the JTAG header. The CPLD is essential
The UART signals from FTDI Channel B go directly to a second header or to the same target connector on some variants. The schematic will show a simple RS-232 level shifter (e.g., MAX3232) if true RS-232 is needed, but normally they are 3.3V CMOS.