AMCNTENCLR0, Activity Monitors Count Enable Clear Register 0

The AMCNTENCLR0 characteristics are:

Purpose

Disable control bits for the architected activity monitors event counters, AMEVCNTR0<n>.

Configuration

External register AMCNTENCLR0 bits [31:0] are architecturally mapped to AArch64 System register AMCNTENCLR0_EL0[31:0].

External register AMCNTENCLR0 bits [31:0] are architecturally mapped to AArch64 System register AMCNTENSET0_EL0[31:0].

External register AMCNTENCLR0 bits [31:0] are architecturally mapped to AArch32 System register AMCNTENCLR0[31:0].

External register AMCNTENCLR0 bits [31:0] are architecturally mapped to AArch32 System register AMCNTENSET0[31:0].

It is IMPLEMENTATION DEFINED whether AMCNTENCLR0 is implemented in the Core power domain or in the Debug power domain.

This register is present only when FEAT_AMUv1 is implemented and FEAT_AMU_EXT32 is implemented. Otherwise, direct accesses to AMCNTENCLR0 are RES0.

Attributes

AMCNTENCLR0 is a 32-bit register.

This register is part of the AMU block.

Field descriptions

313029282726252423222120191817161514131211109876543210
RES0RAZ/WIP3P2P1P0

Bits [31:16]

Reserved, RES0.

Bits [15:4]

Reserved, RAZ/WI.

This field is reserved for additional architected activity monitor event counters, which Arm might define in a future version of the Activity Monitors architecture.

P<n>, bit [n], for n = 3 to 0

Activity monitor event counter disable bit for AMEVCNTR0<n>.

Note

AMCGCR.CG0NC identifies the number of architected activity monitor event counters. In an implementation that includes FEAT_AMUv1, the number of architected activity monitor event counters is 4.

Possible values of each bit are:

P<n>Meaning
0b0

When read, means that AMEVCNTR0<n> is disabled.

0b1

When read, means that AMEVCNTR0<n> is enabled.

The reset behavior of this field is:

Accessing AMCNTENCLR0

Accesses to this register use the following encodings:

Accessible at offset 0xC20 from AMU

Accesses on this interface are RO.


26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

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