TRCSEQEVR<n> Trace Sequencer State Transition Control Register <n> when FEAT_ETE is implemented, FEAT_TRC_EXT is implemented, and TRCIDR5.NUMSEQSTATE != '000' 0 2 ETE 0x100 + (4 * n) TRCSEQEVR<n> When OSLockStatus(), or !AllowExternalTraceAccess(addrdesc), or !IsTraceCorePowered() ERROR RW TRCSEQEVR<n> Architectural AArch64 31 0 31 0 31 0 31 0 Moves the Sequencer state: Backwards, from state n+1 to state n when a programmed resource event occurs. Forwards, from state n to state n+1 when a programmed resource event occurs. Trace TRCSEQEVR<n> is a 32-bit register. 31 16 31:16 Reserved, RES0. B_TYPE 15 15 15 Backward field. Selects an event that causes the Sequencer to move from state n+1 to state n. For example, if TRCSEQEVR2.B_SEL == 0x14, then when event 0x14 occurs, the Sequencer moves from state 3 to state 2. Chooses the type of Resource Selector. 0b0 A single Resource Selector. TRCSEQEVR<n>.B.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. TRCSEQEVR<n>.B.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. TRCSEQEVR<n>.B.SEL[4] is RES0. AU 14 13 14:13 Reserved, RES0. B_SEL 12 8 12:8 Backward field. Selects an event that causes the Sequencer to move from state n+1 to state n. For example, if TRCSEQEVR2.B_SEL == 0x14, then when event 0x14 occurs, the Sequencer moves from state 3 to state 2. Defines the selected Resource Selector or pair of Resource Selectors. TRCSEQEVR<n>.B.TYPE controls whether TRCSEQEVR<n>.B.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. If an unimplemented Resource Selector is selected using this field, the value returned on a direct read of this field is UNKNOWN. 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. AU F_TYPE 7 7 7 Forward field. Selects an event that causes the Sequencer to move from state n to state n+1. For example, if TRCSEQEVR1.F_SEL == 0x12, then when event 0x12 occurs, the Sequencer moves from state 1 to state 2. Chooses the type of Resource Selector. 0b0 A single Resource Selector. TRCSEQEVR<n>.F.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. TRCSEQEVR<n>.F.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. TRCSEQEVR<n>.F.SEL[4] is RES0. AU 6 5 6:5 Reserved, RES0. F_SEL 4 0 4:0 Forward field. Selects an event that causes the Sequencer to move from state n to state n+1. For example, if TRCSEQEVR1.F_SEL == 0x12, then when event 0x12 occurs, the Sequencer moves from state 1 to state 2. Defines the selected Resource Selector or pair of Resource Selectors. TRCSEQEVR<n>.F.TYPE controls whether TRCSEQEVR<n>.F.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. If an unimplemented Resource Selector is selected using this field, the value returned on a direct read of this field is UNKNOWN. 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. AU Must be programmed if TRCRSCTLR<a>.GROUP == 0b0010 and TRCRSCTLR<a>.SEQUENCER != 0b0000. Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state. 2026-03-26 20:27:25 2026-03_rel