Hot-plugging and unplugging the debug cable

You can connect and disconnect the DSTREAM unit to the target hardware without affecting operation of the target if:


If the DSTREAM unit or the target hardware are not properly earthed, potential differences can occur between them, causing unwanted pulses in the debug interface during connection. This can cause unwanted resets to occur.

You might want to connect the debug cable if you have a target that is operating without a DSTREAM unit connected and you want to examine the target to find out why it is behaving in a particular way. To do this, you must power-up the DSTREAM unit and configure the connection without affecting the state of the target. This requires that the DSTREAM unit is powered before it is connected to the target.

When unplugging the debug connector, you must be aware that:

Show/hideSee also

Copyright © 2010-2012 ARM. All rights reserved.ARM DUI 0481F