ARM DS-5 Using the Debug Hardware Configuration Utilities

Creating debug hardware target configurations5.17.2 Non-processor CoreSight device settingsFor non-processor CoreSight devices, the following device configuration settings are available:ARM11xx-JTAG-AP specific settingsThe ARM1136JFS-JTAG-AP, ARM1156T2FS-JTAG-AP, andARM1176JZF-JTAG-AP devices have the following CoreSight-specificcontrols:JTAG-AP Port index for coreFor CoreSight systems with processors connected to JTAG-AP, theport index on the JTAG-AP to which the processor is connected.Pre-scan IR bits for Devices after the core on the JTAG-AP scanchainThe total length of the JTAG instruction registers (IRs) for devicesappearing after the debugged target processor on the scan chain.For example, if there are three devices after the processor with IRlengths of 5, 7, and 11, then set this to 23.Post-scan IR bits for Devices before the core on the JTAG-AP scanchainThe total length of the JTAG instruction registers (IRs) for devicesappearing before the debugged target processor on the scan chain.For example, if there are two devices before the processor with IRlengths of 2 and 3, then set this value to 5.Pre-scan DR bits for Devices after the core on the JTAG-AP scanchainThe total number of devices appearing after the debugged targetprocessor on the scan chain.For example, if there are three devices after the processor, then set thisvalue to 3.Post-scan DR bits for Devices before the core on the JTAG-AP scanchainThe total number of devices appearing before the debugged targetprocessor on the scan chain.For example, if there are two devices before the processor, then set thisvalue to 2.Fast memory download.This control is available for those targets where the Debug Access Port(DAP) and the processor are running sufficiently fast enough to handlethe data being sent to them by the debug unit. The debug unit does nothave to check that each individual transaction with the DAP issuccessful.Because the processor is behind the DAP, all processor accesses haveto go through the DAP. As a guide, do not set this for FPGA-basedtargets, but only for real silicon.If this option is set, then error checking is disabled and the user is notinformed of any errors that occur. If problems are encountered whendownloading images then uncheck this option to resolve them.CoreSight AP indexThe AP index of the device.Available for all devices, except the ARMCS-DP, ARMJTAG-DP, andARMSW-DP devices.CoreSight base addressThe base address of the CoreSight registers for the device on the AHB or APB.ARM DUI 0498F Copyright © 2010-2012 ARM. All rights reserved. 5-31ID021112Non-Confidential