ARM DS-5 Using the Debug Hardware Configuration Utilities
ARM DS-5 Using the Debug Hardware Configuration Utilities
ARM DS-5 Using the Debug Hardware Configuration Utilities
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<strong>Using</strong> Trace7.2 Trace hardware capture ratesIf a Trace Port Interface Unit (TPIU) in continuous mode is used, all port widths from 1 to 32can be output by <strong>the</strong> target. DDR clocking enables data to be output from <strong>the</strong> ETM on both edgesof TRACECLK. This effectively halves <strong>the</strong> clock frequency for <strong>the</strong> same data rate.7.2.1 <strong>DS</strong>TREAM trace hardware capture ratesThe maximum capture rate of <strong>the</strong> <strong>DS</strong>TREAM unit is 600 Mbps per trace signal using a 300MHzDDR clock signal. The capture buffer is 4GB in size.NoteSome debuggers have limitations when tracing with <strong>DS</strong>TREAM. See <strong>the</strong> <strong>DS</strong>-5 <strong>Debug</strong>gerdocumentation for details of <strong>the</strong> trace capabilities.7.2.2 See alsoTasks• Configuring trace lines (<strong>DS</strong>TREAM and RVT2 only) on page 7-4• Configuring your debugger for trace capture on page 7-6.Concepts• About using trace hardware on page 7-2.<strong>ARM</strong> DUI 0498F Copyright © 2010-2012 <strong>ARM</strong>. All rights reserved. 7-3ID021112Non-Confidential
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