The Lauterbach LA-7742R, LA-7844X, and LA-7843X JTAG Debugger Cable Connectors provide the interface between Lauterbach’s TRACE32 In-Circuit Debugger and embedded target systems. These connectors enable multi-protocol debug access, supporting JTAG, SWD, and cJTAG interfaces across diverse processor architectures. They serve as the bridge for high-level and assembly-level debugging, flash programming, and real-time trace acquisition in development environments ranging from single-core to multicore and multiprocessor systems.
Technical Specifications
Debug Protocols & Signal Support
• JTAG: TCK, TMS, TDI, TDO, TRST- signals
• SWD (Serial Wire Debug): TCK and TMS signal reuse
• cJTAG (Compact JTAG): TCK and TMS signal reuse
• Target voltage reference (VTREF) for power detection and auto-adjusting logic levels
• Signal levels: 0.4 V to 5 V range
• SRST- pull-up: 47 kΩ resistor integrated in debug cable
Processor Compatibility
• ARM7, ARM9, ARM10, ARM11, XSCALE architectures
• Cortex-M, Cortex-A, and Cortex-R cores
• Multiprocessor and multicore systems with JTAG daisy-chain support
Trace Capabilities
• ARM Instrumentation Trace Macrocell (ITM) support
• Embedded Trace Macrocell (ETM) support
• Trace data rates: up to 200 Mbit/s per pin (100 MHz DDR)
• 4-pin trace port capacity: 800 Mbit/s aggregate
Physical Interface
• IDC female polarized socket connector (Tyco/T&B: 1-1658526-3 / 609-2041) on debug cable side
– Key Features
• High-level language debugging (C, C++, JAVA, Pascal, Modula2, PEARL, ADA)
• Assembly-level debugging with full control
• RTOS awareness for embedded operating system visibility
• Internal and external flash programming
• Hierarchical symbol database with support for symbol names up to 255 characters
• Multicore debugging with coordinated breakpoint and trace management
– Typical Applications
• ARM-based microcontroller development and production programming
• Real-time embedded systems debugging with RTOS kernels
• Multicore processor validation and bringup
• On-chip flash memory programming and verification
• System-level trace analysis and performance profiling
– Compatibility & Integration
These connectors integrate directly into the TRACE32 In-Circuit Debugger ecosystem. Full compiler support includes all major C/C++ toolchains and legacy language compilers. Target systems must provide appropriate power application and optional SRST- pull-up where required.
