Table 4-150 SYS_ENM_SYS Register bit assignments
Bits
Name
Type
Function
[63:32] SYS_ENM_H_SYS
RW
Most significant 32 bits of a 64
‑
bit representation of the
accumulated energy energy consumption of the fabric of the N1
SoC outside the clusters:
•
The memory address offset of these bits is
0x0104
.
•
Accumulated energy =
(SYS_ENM_CH0_H_SYS:SYS_ENM_L_SYS)/12348030000
joules.
•
The
CB_nRST
reset signal resets the register to zero. The
register then updates every 100µs after the reset.
[31:0]
SYS_ENM_L_SYS
RW
Least significant 32 bits of a 64
‑
bit representation of the
accumulated energy consumption of the fabric of the N1 SoC
outside the clusters:
•
The memory address offset of these bits is
0x0100
.
•
Accumulated energy =
(SYS_ENM_CH0_H_SYS:SYS_ENM_L_SYS)/12348030000
joules.
•
The
CB_nRST
reset signal resets the register to zero. The
register then updates every 100µs after the reset.
4.7.15
SYS_ENM_CL0 Register
The SYS_ENM_CL0 Register characteristics are:
Purpose
Contains a 64
‑
bit representation of the accumulated energy consumption of the N1 SoC cluster
0.
Usage constraints
This register is read
‑
only.
Configurations
Available in all N1 board configurations.
Memory offset and full register reset value
See
4.7.1 APB energy meter registers summary
Note
The value measured by this register is provisional and subject to characterization on the RevB boards.
The following table shows the bit assignments.
4 Programmers model
4.7 APB energy meter registers
101489_0000_02_en
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