8.10.00 J-TRACE ARM Segger Microcontroller Systems, 8.10.00 J-TRACE ARM Datasheet - Page 195
![JTAG EMULATOR ARM7/ARM9 ETM](/photos/9/27/92738/8_10_00-j-trace-arm_sml.jpg)
8.10.00 J-TRACE ARM
Manufacturer Part Number
8.10.00 J-TRACE ARM
Description
JTAG EMULATOR ARM7/ARM9 ETM
Manufacturer
Segger Microcontroller Systems
Type
Emulatorr
Specifications of 8.10.00 J-TRACE ARM
Contents
Emulation Module
For Use With/related Products
ARM7, ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
899-1006
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9.3
J-Link / J-Trace (UM08001)
The ETB is a small, circular on-chip memory area where trace information is stored
during capture. It contains the data which is normally exported immediately after it
has been captured from the ETM. The buffer can be read out through the JTAG port of
the device once capture has been completed. No additional special trace port is
required, so that the ETB can be read via J-Link. The trace functionality via J-Link is
limited by the size of the ETB. While capturing runs, the trace information in the
buffer will be overwritten every time the buffer size has been reached.
The result of the limited buffer size is that not more data can be traced than the
buffer can hold. Through this limitation is an ETB not in every case an fully-fledged
alternative to the direct access to an ETM via J-Trace.
Embedded Trace Buffer (ETB)
© 2004-2011 SEGGER Microcontroller GmbH & Co. KG
195
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