Cortex-M3 Technical Reference Manual Revision r2p0
Home > Embedded Trace Macrocell > ETM Programmers model > Device Power-Down Status Register, ETMPDSR

10.3.10. Device Power-Down Status Register, ETMPDSR

The ETMPDSR characteristics are:

Purpose

Indicates the power-down status of the ETM.

Usage constraints

There are no usage constraints.

Configurations

This register is only available if the processor is configured to use an ETM.

Attributes

See the register summary in Table 10.6

Figure 10.9 shows the ETMPDSR bit assignments.

Figure 10.9. ETMPDSR bit assignments


Table 10.14 shows the ETMPDSR bit assignments.

Table 10.14. ETMPDSR bit assignments

BitsNameFunction
[31:1]-

Reserved, Read-As-Zero.

[0]ETM powered up

The value of this bit indicates whether you can access the ETM Trace Registers. The value of this bit is always 1, indicating that the ETM Trace Registers can be accessed.


Copyright © 2005-2008, 2010 ARM Limited. All rights reserved.ARM DDI 0337H
Non-Confidential
PDF file icon  PDF version
Home > Embedded Trace Macrocell > ETM Programmers model > Device Power-Down Status Register, ETMPDSR