High Performance Debug and Trace

Arm DSTREAM high-performance debug and trace enables powerful software debug and optimization of any Arm processor-based hardware target. Developers can leverage the full debug and trace capabilities of Arm Development Studio on Arm architectures.


The original DSTREAM unit has been discontinued and is no longer available for sale, support for the unit will continue in Arm Development Studio.

For high-speed debug and trace, try one of the next generation DSTREAM probes:


  • Debug and trace on Arm processors from Armv4 to Armv8
  • USB 2.0 and 10/100baseT Ethernet for direct or remote host connections
  • Code download speeds of up to 2.5 MB per second
  • A wide range of target connectors
  • JTAG clock of up to 60 MHz for lightning-fast software upload
  • Support for up to 254 CoreSight devices (including up to 128 CPUs)
  • 4GB trace buffer for extended trace periods
  • Flexible trace clock positioning relative to trace data
  • Remote target reset
  • Device bring-up and test utilities
  • Trace port clocking modes: single and double-edge
  • Flexible architecture to support 3rd party IP and debuggers


Debug protocol JTAG and Serial-Wire Debug
Trace capture 16-bit wide trace capture at 300 MHz DDR (600 Mbit/s per pin)
High-speed serial trace Optional Arm HSSTP and Marvell SETM probe available separately »
Bandwidth Total trace bandwidth up to 9.6 Gbps
Interface Vref 1.2V - 3.3V (configurable by target)
Software requirements Development Studio or DS-5 (sold separately)

High-Speed Serial Trace (HSSTP) probe

Trace is an essential tool for the resolution of complex software/hardware and timing-related issues, as it enables post-analysis of a software execution without the need for any software or hardware instrumentation.

The 4 GB trace buffer on DSTREAM enables high-bandwidth trace for long periods, providing further visibility of how the software executes on the target.

Trace can either be collected using the default parallel trace probe supplied with DSTREAM or alternatively, using the High-Speed Serial Trace Probe (HSSTP), available separately. This allows for high bandwidth serial trace capture of up to 20 Gbps from Arm HSSTP or Marvell® SETM.

What's included?

Mains cables and an external power adapter for the DSTREAM unit
Ethernet cable
USB2.0 cable

Target connectors:

  • 14-pin & 20-pin Arm JTAG
  • 14-pin TI OMAP
  • 10-pin & 20-pin high-density CoreSight connectors
  • 38-pin MICTOR
  • 34-pin MIPI
  • 60-pin MIPI (QSH-60) via optional adapter

Sold separately:
High-Speed Serial Trace probe


Document Number Document Title Description
100955 DSTREAM User Guide Describes the DSTREAM debug and trace unit, and the hardware that enables you to use it.
100956 DSTREAM System and Interface Design Reference Guide Describes the DSTREAM debug and trace unit, with details about designing Arm architecture-based ASICs and PCBs.
EPM051792 CoreSight Access Tool (CSAT) User Guide Describes the commands and usage of the CoreSight Access Tool.

Knowledge base articles

Article ID Article Title Description
103489827 How to use the DAP logger tool Describes how to use the DAP logger tool to record DAP register transactions.
Additional knowledge base articles
Additional DSTREAM knowledge base articles Additional information for working with the DSTREAM unit.