TRCCNTCTLR<n>, Trace Counter Control Register <n>, n = 0 - 3

Reserved, RES0.

For TRCCNTCTLR3 and TRCCNTCTLR1, this field controls whether the Counter decrements when a reload event occurs for Counter <n-1>.

CNTCHAIN	Meaning
0b0	The Counter does not decrement when a reload event for Counter <n-1> occurs.
0b1	Counter <n> decrements when a reload event for Counter <n-1> occurs. This concatenates Counter <n> and Counter <n-1>, to provide a larger count value.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Reserved, RES0.

Controls whether a reload event occurs for the Counter, when the Counter reaches zero.

RLDSELF	Meaning
0b0	Normal mode. The Counter is in Normal mode.
0b1	Self-reload mode. The Counter is in Self-reload mode.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Selects an event, that when it occurs causes a reload event for Counter <n>

Chooses the type of Resource Selector.

RLDEVENT_TYPE	Meaning
0b0	A single Resource Selector. TRCCNTCTLR<n>.RLDEVENT.SEL[4:0] selects the single Resource Selector, from 0-31, used to activate the resource event.
0b1	A Boolean-combined pair of Resource Selectors. TRCCNTCTLR<n>.RLDEVENT.SEL[3:0] selects the Resource Selector pair, from 0-15, that has a Boolean function that is applied to it whose output is used to activate the resource event. TRCCNTCTLR<n>.RLDEVENT.SEL[4] is RES0.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Reserved, RES0.

Selects an event, that when it occurs causes a reload event for Counter <n>

Defines the selected Resource Selector or pair of Resource Selectors. TRCCNTCTLR<n>.RLDEVENT.TYPE controls whether TRCCNTCTLR<n>.RLDEVENT.SEL is the index of a single Resource Selector, or the index of a pair of Resource Selectors.

If an unimplemented Resource Selector is selected using this field, the behavior of the resource event is UNPREDICTABLE, and the resource event might fire or might not fire when the resources are not in the Paused state.

Selecting Resource Selector pair 0 using this field is UNPREDICTABLE, and the resource event might fire or might not fire when the resources are not in the Paused state.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Selects an event, that when it occurs causes Counter <n> to decrement.

Chooses the type of Resource Selector.

CNTEVENT_TYPE	Meaning
0b0	A single Resource Selector. TRCCNTCTLR<n>.CNTEVENT.SEL[4:0] selects the single Resource Selector, from 0-31, used to activate the resource event.
0b1	A Boolean-combined pair of Resource Selectors. TRCCNTCTLR<n>.CNTEVENT.SEL[3:0] selects the Resource Selector pair, from 0-15, that has a Boolean function that is applied to it whose output is used to activate the resource event. TRCCNTCTLR<n>.CNTEVENT.SEL[4] is RES0.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Reserved, RES0.

Selects an event, that when it occurs causes Counter <n> to decrement.

Defines the selected Resource Selector or pair of Resource Selectors. TRCCNTCTLR<n>.CNTEVENT.TYPE controls whether TRCCNTCTLR<n>.CNTEVENT.SEL is the index of a single Resource Selector, or the index of a pair of Resource Selectors.

If an unimplemented Resource Selector is selected using this field, the behavior of the resource event is UNPREDICTABLE, and the resource event might fire or might not fire when the resources are not in the Paused state.

Selecting Resource Selector pair 0 using this field is UNPREDICTABLE, and the resource event might fire or might not fire when the resources are not in the Paused state.

The reset behavior of this field is:

• On a Trace unit reset, this field resets to an architecturally UNKNOWN value.