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4.5.2
SYS_I_SYS Register
The SYS_I_SYS Register characteristics are:
Purpose
Contains a 12-bit representation of the instantaneous current consumption of the Juno r2 SoC
outside the clusters.
Usage constraints
This register is read-only.
Configurations
Available in all V2M-Juno r2 motherboard configurations.
The following figure shows the bit assignments.
31
0
Reserved
11
12
SYS_I_SYS
Figure 4-20 SYS_I_SYS Register bit assignments
The following table shows the bit assignments.
Table 4-24 SYS_I_SYS Register bit assignments
Bits
Name
Function
[31:12] -
Reserved. If you read this register, you must ignore these bits.
[11:0]
SYS_I_SYS 12-bit representation of the instantaneous current consumption of the Juno r2 SoC outside the clusters:
•
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
4.5.3
SYS_I_A72 Register
The SYS_I_A72 Register characteristics are:
Purpose
Contains a 12-bit representation of the instantaneous current consumption of the Cortex-A72
cluster.
Usage constraints
This register is read-only. You must use one of the Cortex-A53 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_A72
Figure 4-21 SYS_I_A72 Register bit assignments
The following table shows the bit assignments.
4 Programmers Model
4.5 APB energy meter registers
ARM 100114_0200_03_en
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