ARM DSTREAM-ST Getting Started Manual page 26

DSTREAM-ST Getting Started Guide
To connect a DSTREAM-ST unit to a target without affecting its current state, you must:
1. Power up the DSTREAM-ST unit. Allow the DSTREAM-ST unit to power up.
2. Connect the debug cable to the target.
Hot-plugging: disconnecting
When unplugging the debug connector, you must be aware that:
• If you are using a Return Test Clock (RTCK) system, make sure that no communication is taking
place between the system and the DSTREAM-ST unit. Otherwise, if the DSTREAM-ST unit is
waiting for a return clock, it might lock up.
• If you are not using an RTCK system, the debug software can handle this situation. However,
you must perform a Test Access Port (TAP) reset using the debugger when you next connect
the DSTREAM-ST unit into a target. For more information on TAP resets, see
Related information
Connect and power up the DSTREAM-ST unit
Copyright © 2017–2019, 2022 Arm Limited (or its affiliates). All rights reserved.
on page 20
Non-Confidential
Document ID: 100892_1.0_07_en
Version 1.0
Work with your DSTREAM-ST
Reset signals.
Page 26 of 31