Table 4-137 N1 SDP APB system register summary (continued)
Offset
Name
Type Reset
Width Description
0x0130
SYS_POW_ DDR0
RO
0x0000_0000
32
See
.
0x0134
SYS_POW_ DDR1
RO
0x0000_0000
32
See
.
0x0138
SYS_ENM_L_ DDR0 RW
0x0000_0000
32
See
.
0x013C
SYS_ENM_H_ DDR0 RW
0x0000_0000
32
See
.
0x0140
SYS_ENM_L_ DDR1 RW
0x0000_0000
32
See
.
0x0144
SYS_ENM_H_ DDR1 RW
0x0000_0000
32
See
.
4.7.2
SYS_I_SYS Register
The SYS_I_SYS Register characteristics are:
Purpose
Contains a 12
‑
bit representation of the instantaneous current consumption of the parts of the N1
SoC, outside the clusters, that operate from the VSYS power supply.
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 4-138 SYS_I_SYS Register bit assignments
Bits
Name
Type
Function
[31:12] -
-
Reserved.
[11:0]
SYS_I_SYS
RO
12
‑
bit representation of the instantaneous current consumption of
the parts of the N1 SoC, outside the clusters, that operate from the
VSYS power supply:
•
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.
4.7.3
SYS_I_CL0 Register
SYS_I_CL0 Register characteristics are:
4 Programmers model
4.7 APB energy meter registers
101489_0000_02_en
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