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Counter Control Register 0

The TRCCNTCTLR0 characteristics are:

Purpose

Controls the counter.

Usage constraints

Accepts writes only when the trace unit is disabled.

Configurations

Available in all configurations.

Attributes

See the register summary in Table 13.3.

Figure 13.23 shows the TRCCNTCTLR0 bit assignments.

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Table 13.24 shows the TRCCNTCTLR0 bit assignments.

Table 13.24. TRCCNTCTLR0 bit assignments
Bits Name Function
[31:17] - Reserved, res0.
[16] RLDSELF

Defines whether the counter reloads when it reaches zero:

0

The counter does not reload when it reaches zero. The counter only reloads based on RLDTYPE and RLDSEL.

1

The counter reloads when it reaches zero and the resource selected by CNTTYPE and CNTSEL is also active. The counter also reloads based on RLDTYPE and RLDSEL.

[15] RLDTYPE

Selects the resource type for the reload:

0

Single selected resource.

1

Boolean combined resource pair.

[14:12] - Reserved, res0.
[11:8] RLDSEL

Selects the resource number, based on the value of RLDTYPE:

When RLDTYPE is 0, selects a single selected resource from 0-15 defined by bits[3:0].

When RLDTYPE is 1, selects a Boolean combined resource pair from 0-7 defined by bits[2:0].

[7] CNTTYPE

Selects the resource type for the counter:

0

Single selected resource.

1

Boolean combined resource pair.

[6:4] - Reserved, res0.
[3:0] CNTSEL

Selects the resource number, based on the value of CNTTYPE:

When CNTTYPE is 0, selects a single selected resource from 0-15 defined by bits[3:0].

When CNTTYPE is 1, selects a Boolean combined resource pair from 0-7 defined by bits[2:0].


The TRCCNTCTLR0 can be accessed through the internal memory-mapped interface and the external debug interface, offset 0x150.

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