Cortex-M3 Technical Reference Manual Revision r2p1
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11.3.5. Integration ETM Data

The Integration ETM Data characteristics are:

Purpose

Trace data integration testing.

Usage constraints

You must set bit [1] of TPIU_ITCTRL to use this register. See Integration Mode Control, TPIU_ITCTRL.

Configurations

This register is available in all processor configurations.

Attributes

See Table 11.1.

Figure 11.6 shows the Integration ETM Data bit assignments.

Figure 11.6. Integration ETM Data bit assignments

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Table 11.6 shows the Integration ETM Data bit assignments.

Table 11.6. Integration ETM bit assignments

BitsNameFunction
[31:30]-Reserved
[29]ITM ATVALID input Returns the value of the ITM ATVALID signal.
[28:27]ITM byte countNumber of bytes of ITM trace data since last read of Integration ITM Data Register.
[26]ETM ATVALID inputReturns the value of the ETM ATVALID signal.
[25:24]ETM byte countNumber of bytes of ETM trace data since last read of Integration ETM Data Register.
[23:16]ETM data 2ETM trace data. The TPIU discards this data when the register is read.
[15:8]ETM data 1
[7:0]ETM data 0

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