J-Link / J-Trace User Guide (UM08001) - Microcontrollers
J-Link / J-Trace User Guide (UM08001) - Microcontrollers
J-Link / J-Trace User Guide (UM08001) - Microcontrollers
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6. Choose Project|Options and configure your second scan chain. The following<br />
dialog box shows the configuration for the second ARM core on your target.<br />
7. Start debugging your second core.<br />
Example:<br />
Core #1 Core #2 Core #3<br />
Cores to debug are marked in blue.<br />
5.5.3 Things you should be aware of<br />
Multi-core debugging is more difficult than single-core debugging. You should be<br />
aware of the pitfalls related to JTAG speed and resetting the target.<br />
5.5.3.1 JTAG speed<br />
TAP number<br />
debugger #1<br />
ARM7TDMI ARM7TDMI-S ARM7TDMI 0 1<br />
ARM7TDMI ARM7TDMI ARM7TDMI 0 2<br />
ARM7TDM<br />
I-S<br />
ARM7TDMI-S ARM7TDMI-S 1 2<br />
Table 5.9: Multicore debugging<br />
TAP number<br />
debugger #2<br />
Each core has its own maximum JTAG speed. The maximum JTAG speed of all cores<br />
in the same chain is the minimum of the maximum JTAG speeds.<br />
For example:<br />
Core #1: 2MHz maximum JTAG speed<br />
Core #2: 4MHz maximum JTAG speed<br />
Scan chain: 2MHz maximum JTAG speed<br />
J-<strong>Link</strong> / J-<strong>Trace</strong> (<strong>UM08001</strong>) © 2004-2010 SEGGER Microcontroller GmbH & Co. KG<br />
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