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3.3.3.6 Other configurations
1. "show_id" parameter
The “show_id” parameter within the
config.yaml
configuration file can set the display order of the power rails. If the
“show_id” parameter is set to 0, then this rail will not be sampled. It will not be displayed in the TUI and dumped into
the CSV file. Restart the BCU to bring the updated
config.yaml
file into effect. The following is a “show_id” parameter
configuration example:
boardname: imx8mpevkpwra1
mappings:
- vdd_arm : { rsense1: 20 , rsense2: 5010 , show_id: 3 }
#Range: rsense1=>5000.0mA, rsense2=>20.0mA
- nvcc_dram_1v1 : { rsense1: 50 , rsense2: 2050 , show_id: 2 }
#Range: rsense1=>2000.0mA, rsense2=>48.8mA
- vsys_5v : { rsense1: 20 , rsense2: 420 , show_id: 1 }
#Range: rsense1=>5000.0mA, rsense2=>238.0mA
- vdd_soc : { rsense1: 10 , rsense2: 1010 , show_id: 0 }
#Range: rsense1=>10000.0mA, rsense2=>100.0mA
In this example, the display order of "VDD_ARM" and "VSYS_5V" changed and the "VDD_SOC" data will not be sampled
and displayed, as shown in
.
Figure 5. “show_id” parameter configuration example
2. Dual measurement range
The TUI interface provides direct user control over the power rails with the dual measurement range. Enter the power rail
location value to switch the sense resistor to measure the corresponding power rail within a different current range. For
example, press “A” to switch the current range for “VDD_ARM” from 5000 mA to 20 mA. Press “A” again to switch back to
5000 mA. For the i.MX8MPLUS PWR board, there are 7 power rails that support the dual measurement range.
Table 4. Power rails
Location
Power Rail
Range1 (mA)
Rs1 (OHM)
Range2 (mA)
Rs2 (OHM)
A
VDD_ARM
5000
0.02
20
5.01
B
NVCC_DRAM_1V1
2000
0.05
48.8
2.05
C
VSYS_5V
5000
0.02
238
0.42
D
VDD_SOC
10000
0.01
100
1.01
E
LPD4_VDDQ
2000
0.05
48.8
2.05
J
NVCC_SNVS_1V8
10
10
0.2
509
O
VDD_PLL_ANA_1V8
400
1.008
9.1
11
NXP Semiconductors
Getting started
i.MX 8M Plus Power Measurement Board User's Guide, Rev. 0, 29 April 2021
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