AMCNTENSET1, Activity Monitors Count Enable Set Register 1
The AMCNTENSET1 characteristics are:
Purpose
Enable control bits for the auxiliary activity monitors event counters, AMEVCNTR1<n>.
Configuration
External register AMCNTENSET1 bits [31:0] are architecturally mapped to AArch64 System register AMCNTENSET1_EL0[31:0] .
External register AMCNTENSET1 bits [31:0] are architecturally mapped to AArch32 System register AMCNTENSET1[31:0] .
The power domain of AMCNTENSET1 is IMPLEMENTATION DEFINED.
This register is present only when FEAT_AMUv1 is implemented. Otherwise, direct accesses to AMCNTENSET1 are RES0.
Attributes
AMCNTENSET1 is a 32-bit register.
Field descriptions
The AMCNTENSET1 bit assignments are:
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
P31 | P30 | P29 | P28 | P27 | P26 | P25 | P24 | P23 | P22 | P21 | P20 | P19 | P18 | P17 | P16 | P15 | P14 | P13 | P12 | P11 | P10 | P9 | P8 | P7 | P6 | P5 | P4 | P3 | P2 | P1 | P0 |
P<n>, bit [n], for n = 31 to 0
Activity monitor event counter enable bit for AMEVCNTR1<n>.
Bits [31:N] are RAZ/WI. N is the value in AMCGCR.CG1NC.
Possible values of each bit are:
P<n> | Meaning |
---|---|
0b0 |
When read, means that AMEVCNTR1<n> is disabled. When written, has no effect. |
0b1 |
When read, means that AMEVCNTR1<n> is enabled. When written, enables AMEVCNTR1<n>. |
On a Cold reset, this field resets to 0.
Accessing the AMCNTENSET1
If the number of auxiliary activity monitor event counters implemented is zero, reads of AMCNTENSET1 are RAZ/WI. Software must treat reserved accesses as RES0. See 'Access requirements for reserved and unallocated registers'.
The number of auxiliary activity monitor counters implemented is zero exactly when AMCFGR.NCG == 0b0000.
AMCNTENSET1 can be accessed through the memory-mapped interfaces:
Component | Offset | Instance |
---|---|---|
AMU | 0xC04 | AMCNTENSET1 |
Accesses on this interface are RO.