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Embedded Trace Macrocell
15-18
Only bit 25 is implemented. It controls the start/stop resource controls tracing.
ETM ID Register
The ETM ID Register holds the ETM architecture variant, and precisely defines the
Programmer's Model for the ETM.
Reset value:
0x4114F240
This indicates:
•
ARM implementor.
•
Special branch encoding. Affects bits 7:6 of each byte.
•
Thumb-2 supported.
•
Core family is found elsewhere.
•
ETMv3.4.
•
Implementation revision 0.
Configuration Code Extension Register
The Configuration Code Extension Register holds additional bits for ETM
configuration code. It describes the extended external inputs.
Reset value:
0x00018800
This register indicates:
•
start/stop block uses E-ICE inputs
•
four embedded ICE inputs
•
no data comparisons supported
•
all registers are readable
•
no extended external input supported.
Copyright © 2005, 2006 ARM Limited. All rights reserved.
ARM DDI 0337B
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