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Texas Instruments AM570x Power Consumption Summary Application notes
Application Report
SPRACF1 – April 2018
AM570x Power Consumption Summary
Ahmad Rashed
ABSTRACT
This application report discusses the power consumption for common system application usage scenarios
for the AM570x Sitara™ processors. The metrics contained in this document serve to provide a better
understanding of the AM570x active power behaviors, making it easier to determine a suitable
configuration to meet a given power budget.
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Contents
Introduction ................................................................................................................... 1
High-Level Summary ........................................................................................................ 3
AM570x Power Measurement Results .................................................................................... 3
List of Tables
1
AM570x Power Supplies .................................................................................................... 2
2
Default OPP
3
.................................................................................................................
Power Summary ............................................................................................................
3
3
Trademarks
Sitara is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
1
Introduction
Power consumption is highly dependent on the individual user’s application; however, this document
focuses on providing several AM570x application-usage case scenarios and the environment settings that
were used to perform such power measurements. This collection of real power measurements was
measured on internal AM570x boards with an on-board power measurement device (TI INA226).
1.1
Power Measurement Setup
The following section details power measurements taken on a AM570x platform for typical use case
applications. The software being used is the TI Processor SDK Linux 4.02 for AM57xx Sitara Processors.
Static power or leakage current consumption varies across manufacturing process,temperature and
voltage. All of the readings shown here are on a nominal part and taken at room temperature. These
measurements have been performed on an internal evaluation reference system and they were only
captured once. Changes in the SDK version or software configuration can affect the results.
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1
Introduction
1.2
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AM570x Power Supplies
Table 1 describes the power supplies for AM570x.
Table 1. AM570x Power Supplies
Power Supply Group
VDD_CORE
VDD_DSP
Signal
vdd
Description
Core, MPU, and GPU voltage domain supply
vdd_dsp
DSP and IVA voltage domain supply
VDDS_DDR (1.35 V/1.5 V)
vdds_ddr
EMIF power supply
Analog PHY (1.8 V)
vdda_pcie
DPLL_PCIe_REF and PCIe analog power supply
vdda_csi
Analog DPLL (1.8 V)
vdda_usb1
DPLL_USB and HS USB1 analog power supply
vdda_usb2
HS USB2 analog power supply
vdda_hdmi
HDMI analog power supply
vdda_usb3
DPLL_USB_OTG_SS and USB3.0 RX/TX analog power supply
vdda_gpu
DPLL_GPU analog power supply
vdda_video
vdda_mpu_abe
HFOSC analog power supply
DPLL_PER, and PER HSDIVIDER analog power supply
vdda_ddr
DPLL_DDR and DDR HSDIVIDER analog power supply
vdda_core_gmac
DPLL_DSP and DPLL_IVA analog power supply
DPLL_CORE and CORE HSDIVIDER analog power supply
HS USB1 3.3 V analog power supply
vdda33v_usb2
HS USB2 3.3 V analog power supply
vdds18v_ddr1
EMIF1 bias power supply
vdds_mlbp
2
DPLL_DEBUG analog power supply
vdda33v_usb1
vdds18v
3.3 V I/O
DPLL_MPU analog power supply
vdda_per
vdda_debug
1. 8 V I/O
DPLL_VIDEO1 analog power supply
vdda_osc
vdda_dsp_iva
Analog USB PHY (3.3 V)
CSI Interface 1.8 V power supply
vddshv[1-11]
1.8 V power supply
MLBP I/O Power Supply
Dual voltage power supply
AM570x Power Consumption Summary
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High-Level Summary
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2
High-Level Summary
This section describes the high-level power summary of the device with each application use case.
• OS Idle - No application is running on Linux.
• Dhrystone - The Dhrystone benchmark application is running on single Coretex-A15 core.
• Graphics 3D Chameleon Man - The 3D graphics application is showing a matrix skinned character in
combination with bump mapping.
• Ethernet - Ethernet throughput benchmark application (iperf) is running on Linux.
• USB - USB benchmark application (Bonnie) is running on Linux.
• Memeory - DDR memory test application (memtester) is running on Linux.
Table 2 contains a default OPP's of device domains.
Table 2. Default OPP
MPU
GPU
DSP
IVA
NOM
NOM
HIGH
HIGH
Table 3 contains a high-level summary of the total device power (measured in milliwatts) for each
application use case and configuration.
Table 3. Power Summary
Test Case
Power (mW)
OS Idle
1346
Dhrystone
2244
Graphics
1904
Ethernet
1440
USB
1970
Memtester
2477
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AM570x Power Measurement Results
3.1
OS Idle
In this measurement, no applications are running on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.263
18.190
59.353
vdda_usb3v3
3.299
2.630
8.676
vddshv8
1.794
0.420
0.754
vdda_1v8_phy
1.794
104.970
188.294
vdda_1v8_pll
1.797
30.550
54.892
vdd_ddr_1v35
1.351
116.500
157.364
vdds_1v8
1.801
52.120
93.845
vdd_dsp
0.932
9.690
9.035
vdd_core
1.077
718.360
773.368
1.355
157.050
Total Power
vdd_ddr
1345.58
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AM570x Power Measurement Results
3.2
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Dhrystone
In this measurement, the Dhrystone benchmark (runDhrystone) is running continuously on the single
Cortex-A15 core on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.256
18.360
59.782
vdda_usb3v3
3.299
2.610
8.612
vddshv8
1.794
0.500
0.897
vdda_1v8_phy
1.794
104.450
187.364
vdda_1v8_pll
1.797
30.620
55.019
vdd_ddr_1v35
1.351
116.640
157.527
vdds_1v8
1.801
55.410
99.774
vdd_dsp
0.933
10.530
9.822
vdd_core
1.096
1519.320
1665.609
1.355
158.590
214.921
Total Power
vdd_ddr
3.3
2244.4
Graphics
In this measurement, runOGLES2ChameleonManContinously.sh is running on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.253
107.870
350.853
vdda_usb3v3
3.299
2.650
8.742
vddshv8
1.794
0.430
0.772
vdda_1v8_phy
1.794
104.830
188.043
vdda_1v8_pll
1.797
34.300
61.627
vdd_ddr_1v35
1.351
150.620
203.469
vdds_1v8
1.800
71.490
128.711
vdd_dsp
0.932
10.560
9.846
vdd_core
1.081
881.130
952.369
1.356
319.860
Total Power
vdd_ddr
3.4
1904.43
433.738
Ethernet
In this measurement, an Ethernet throughput benchmark (iperf) is running on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.258
43.260
140.934
vdda_usb3v3
3.299
2.580
8.512
vddshv8
1.794
0.420
0.754
vdda_1v8_phy
1.794
104.740
187.884
vdda_1v8_pll
1.797
30.630
55.047
vdd_ddr_1v35
1.351
116.080
156.814
vdds_1v8
1.801
55.230
99.444
vdd_dsp
0.932
10.340
9.641
vdd_core
1.077
725.610
781.446
1.354
171.340
Total Power
vdd_ddr
4
1440.48
AM570x Power Consumption Summary
232.033
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AM570x Power Measurement Results
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3.5
USB
In this measurement, a USB benchmark application (Bonnie++) is running on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.258
18.390
59.918
vdda_usb3v3
3.299
4.770
15.736
vddshv8
1.794
0.470
0.843
vdda_1v8_phy
1.794
105.480
189.218
vdda_1v8_pll
1.797
30.600
54.984
vdd_ddr_1v35
1.350
107.410
145.038
vdds_1v8
1.800
54.500
98.122
vdd_dsp
0.933
9.970
9.298
vdd_core
1.091
1280.830
1396.841
Total Power
vdd_ddr
3.6
1970
1.355
175.280
237.465
Memory
In this measurement, a DDR memory test application (memtester) is running on Linux.
Power Supply Group
Voltage [V]
Current [mA]
Power [mW]
vddshv_3v3
3.252
18.220
59.246
vdda_usb3v3
3.299
2.630
8.677
vddshv8
1.795
0.420
0.754
vdda_1v8_phy
1.794
104.850
188.105
vdda_1v8_pll
1.797
30.680
55.137
vdd_ddr_1v35
1.353
280.450
379.368
vdds_1v8
1.801
88.320
159.076
vdd_dsp
0.933
11.380
10.615
vdd_core
1.096
1475.210
1616.407
1.359
653.410
Total Power
vdd_ddr
2477.39
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AM570x Power Consumption Summary
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