3.16.18. Counter Value Registers, ETMCNTVRn

The ETMCNTVR characteristics are:

Purpose

An ETMCNTVR holds the current value of the corresponding counter.

Usage constraints

Each ETMCNTVR is used with a corresponding ETMCNTRLDVR, ETMCNTENR, and ETMCNTRLDEVR. See About the counter registers.

Configurations

The number of ETMCNTVRs:

  • is implementation defined

  • is specified by ETMCCR bits [15:13]

  • can be zero.

See Configuration Code Register, ETMCCR.

Unimplemented ETMCNTVRs are RAZ/WI.

Attributes

See the register summary in Table 3.16.

Figure 3.27 shows the ETMCNTVR bit assignments.

Figure 3.27. ETMCNTVR bit assignments

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Table 3.34 shows the ETMCNTVR bit assignments.

Table 3.34. ETMCNTVR bit assignments

Bits

Description

[31:16]Reserved.

[15:0]

Current counter value. See Programming bit and associated state for information on programming this register.


Each ETMCNTVR has the same bit assignments.

If the ETMCNTVR is written while the programming bit is set, the counter does not load the value from the ETMCNTRLDVR but retains the value written to the ETMCNTVR.

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