ARM DS-5 Using the Debug Hardware Configuration Utilities

Creating debug hardware target configurationsAvailable for all devices, except the ARMCS-DP, ARMJTAG-DP, andARMSW-DP devices.Force ETM power up on connectIf the CoreSight ETM (CSETM) is powered down when your debugger attemptsto connection to it, then power up the device.Memory Access AP indexThe index number of the AHB-AP memory bus on the DAP. The AHB-AP bus isused to perform memory operations within the CoreSight system.Available for the ARMCS-DP, ARMJTAG-DP, and ARMSW-DP devices only.The ARMCS-DP device represents the Debug Access Port (DAP) in a CoreSight system. Thisdevice is automatically detected when you autoconfigure a CoreSight system. However, anydevices connected to the DAP are not detected. Therefore, you must read the CoreSight ROMtable of the ARMCS-DP to determine the devices that are connected to the DAP.The ARM11xx-JTAG-AP device represents the JTAG-AP in a CoreSight system. To debugCoreSight systems that have processors connected to the DAP the JTAG-AP, the debug unitmust know the pre-scan and post-scan bits for JTAG operations.Multiple devices on the JTAG scan chain are connected in series, with data flowing serially fromTDI to TDO. This means that debugging a given target in the chain requires that certain pre-scanand post-scan bits are used. These bits ensure that the other devices are not affected by the datadirected at the target device, and that the data is positioned correctly in the serial scan for thetarget device.5.17.3 See alsoTasks• Configuring CoreSight processors on page 6-22• Configuring ARM7, ARM9, and ARM11 processors in CoreSight systems on page 6-24• Configuring a target processor for virtual Ethernet on page 5-51.Concepts• Strategies used by debug hardware to debug cached processors on page 8-15.ARM DUI 0498F Copyright © 2010-2012 ARM. All rights reserved. 5-32ID021112Non-Confidential