Table 4-25 SYS_I_A72 Register bit assignments
Bits
Name
Function
[31:12] -
Reserved. If you read this register, you must ignore these bits.
[11:0]
SYS_I_A72 12-bit representation of the instantaneous current consumption of the Cortex-A72 cluster:
•
Full scale measurement, 4096, represents 10A. Full scale is
0xFFF
.
•
Measured current = (SY1)/381 amperes.
•
The
CB_nRST
reset signal resets the register to zero. The register then updates every 100µs after the reset.
Related concepts
4.5.1 APB energy register summary
4.5.4
SYS_I_A53 Register
The SYS_I_A53 Register characteristics are:
Purpose
Contains a 12-bit representation of the instantaneous current consumption of the Cortex-A53
cluster.
Usage constraints
This register is read-only. You must use one of the Cortex-A72 cores to read this register.
Configurations
Available in all V2M-Juno r2 motherboard configurations.
The following figure shows the bit assignments.
31
0
Reserved
11
12
SYS_I_A53
Figure 4-22 SYS_I_A53 Register bit assignments
The following table shows the bit assignments.
Table 4-26 SYS_I_A53 Register bit assignments
Bits
Name
Function
[31:12] -
Reserved. If you read this register, you must ignore these bits.
[11:0]
SYS_I_A53 12-bit representation of the instantaneous current consumption of the Cortex-A53 cluster:
•
Full scale measurement, 4096, represents 5A. Full scale is
0xFFF
.
•
Measured current = (SY1)/761 amperes.
•
The
CB_nRST
reset signal resets the register to zero. The register then updates every 100µs after the reset.
Related concepts
4.5.1 APB energy register summary
4.5.5
SYS_I_GPU Register
The SYS_I_GPU Register characteristics are:
Purpose
Contains a 12-bit representation of the instantaneous current consumption of the Mali-T624
GPU cluster.
Usage constraints
This register is read-only.
4 Programmers Model
4.5 APB energy meter registers
ARM 100114_0200_03_en
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