Table 4-153 SYS_ENM_CL1 Register bit assignments
Bits
Name
Type
Function
[63:32] SYS_ENM_H_CL1
RO
Most significant 32 bits of a 64
‑
bit representation of the
accumulated energy consumption of N1 SoC cluster 1:
•
The memory address offset of these bits is
0x011C
.
•
Accumulated energy =
(SYS_ENM_H_CL1:SYS_ENM_L_CL1)/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_CL1
RO
Least significant 32 bits of a 64
‑
bit representation of the
accumulated energy consumption of N1 SoC cluster 1:
•
The memory address offset of these bits is
0x0118
.
•
Accumulated energy =
(SYS_ENM_H_CL1:SYS_ENM_L_CL1)/12348030000
joules.
•
The
CB_nRST
reset signal resets the register to zero. The
register then updates every 100µs after the reset.
4.7.18
SYS_I_DDR0 Register
SYS_I_DDR0 Register characteristics are:
Purpose
Contains a 12
‑
bit representation of the instantaneous current consumption of DDR 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.
Table 4-154 SYS_I_DDR0 Register bit assignments
Bits
Name
Type
Function
[31:12] -
-
Reserved.
[11:0]
SYS_I_DDR0
RO
12
‑
bit representation of the instantaneous current consumption of
DDR 0:
•
Full scale measurement, 4096, represents 10A. Full scale is
0xFFF
.
•
Measured current = (SYS1)/381 amperes.
•
The
CB_nRST
reset signal resets the register to zero. The
register then updates every 100µs after the reset.
4 Programmers model
4.7 APB energy meter registers
101489_0000_02_en
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