ARM DS-5 Using the Debug Hardware Configuration Utilities

Using Trace7.1 About using trace hardwareTrace hardware is included in a DSTREAM unit, or is available as a separate RVT or RVT2 unitfor use with RVI.The trace data capture feature works in conjunction with the debug run control feature in debughardware. Together, they provide real-time trace functionality for software running in leadingedge System-on-Chip (SoC) devices with deeply embedded processors that contain theEmbedded Trace Macrocell (ETM) logic.The trace functionality enables:• collection of trace information at clock speeds of up to 480MHz• provision of a data streaming capability through a USB2 interface. This enables profilingdirectly from a hardware platform, in combination with a debug hardware unit.The streaming of trace data removes the usual trace capture unit dependence on the size of theon-board buffer. It enables you to capture profiling data in a file on the system hosting theprofiling software over long periods. The limitations are:• the disk space available on the host system• the amount of data you consider reasonable to analyze.NoteProfiling with ARM Profiler is not supported from a DSTREAM unit. However, profiling withthe trace view is supported.7.1.1 See alsoTasks• Configuring trace lines (DSTREAM and RVT2 only) on page 7-4• Configuring your debugger for trace capture on page 7-6.ARM DUI 0498F Copyright © 2010-2012 ARM. All rights reserved. 7-2ID021112Non-Confidential