TRCCIDCVR<n> Trace Context Identifier Comparator Value Registers <n> when FEAT_ETE is implemented, FEAT_TRC_EXT is implemented, and UInt(TRCIDR4.NUMCIDC) > n 0 7 ETE 0x600 + (8 * n) TRCCIDCVR<n> When OSLockStatus(), or !AllowExternalTraceAccess(addrdesc), or !IsTraceCorePowered() ERROR RW TRCCIDCVR<n> Architectural AArch64 63 0 63 0 63 0 63 0 Contains a Context identifier value. Trace TRCCIDCVR<n> is a 64-bit register. VALUE 63 0 63:0 Context identifier value. The width of this field is indicated by TRCIDR2.CIDSIZE. Unimplemented bits are RES0. After a PE Reset, the trace unit assumes that the Context identifier is zero until the PE updates the Context identifier. AU Must be programmed if any of the following are true: TRCRSCTLR<a>.GROUP == 0b0110 and TRCRSCTLR<a>.CID[n] == 1. TRCACATR<a>.CONTEXTTYPE == 0b01 or 0b11 and TRCACATR<a>.CONTEXT == n. Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state. 2026-03-26 20:27:25 2026-03_rel