SPRADG1 February   2024 AM625 , AM625-Q1 , AM625SIP

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Active Power Consumption Summary
  5. 2Low Power Consumption Summary
  6. 3Introduction
    1. 3.1 Testing Conditions and Parameters
    2. 3.2 Starter Kit EVM Information
    3. 3.3 Starter Kit EVM Power Rails
  7. 4Power Measurement Data
    1. 4.1 Low-Power Modes
      1. 4.1.1 OS Idle
        1. 4.1.1.1 OS Idle Setup
        2. 4.1.1.2 OS Idle Data
          1. 4.1.1.2.1 OS Idle at 200MHz
          2. 4.1.1.2.2 OS Idle at 400MHz
          3. 4.1.1.2.3 OS Idle at 600MHz
          4. 4.1.1.2.4 OS Idle at 800MHz
          5. 4.1.1.2.5 OS Idle at 1000MHz
          6. 4.1.1.2.6 OS Idle at 1250MHz
          7. 4.1.1.2.7 OS Idle at 1400MHz
      2. 4.1.2 Deep Sleep
        1. 4.1.2.1 Deep Sleep Setup
        2. 4.1.2.2 Deep Sleep Data
      3. 4.1.3 MCU Only
        1. 4.1.3.1 MCU Only Setup
        2. 4.1.3.2 MCU Only Data
    2. 4.2 Core Benchmarks
      1. 4.2.1 Dhrystone
        1. 4.2.1.1 Dhrystone Setup
        2. 4.2.1.2 Dhrystone Data
          1. 4.2.1.2.1 1-Core Dhrystone Data
          2. 4.2.1.2.2 2-Core Dhrystone Data
          3. 4.2.1.2.3 4-Core Dhrystone Data
      2. 4.2.2 Whetstone
        1. 4.2.2.1 Whetstone Setup
        2. 4.2.2.2 Whetstone Data
          1. 4.2.2.2.1 1-Core Whetstone Data
          2. 4.2.2.2.2 2-Core Whetstone Data
          3. 4.2.2.2.3 4-Core Whetstone Data
      3. 4.2.3 Stress-ng
        1. 4.2.3.1 Stress-ng Setup
        2. 4.2.3.2 Stress-ng Data
          1. 4.2.3.2.1 1-Core Stress-ng Data
          2. 4.2.3.2.2 2-Core Stress-ng Data
          3. 4.2.3.2.3 4-Core Stress-ng Data
    3. 4.3 Memory Benchmark
      1. 4.3.1 Stream
        1. 4.3.1.1 Stream Setup
        2. 4.3.1.2 Stream Data
          1. 4.3.1.2.1 1-Core Stream Data
          2. 4.3.1.2.2 2-Core Stream Data
          3. 4.3.1.2.3 4-Core Stream Data
    4. 4.4 Networking/Cryptography Benchmark
      1. 4.4.1 OpenSSL
        1. 4.4.1.1 OpenSSL Setup
        2. 4.4.1.2 OpenSSL Data
          1. 4.4.1.2.1 1-Core OpenSSL Data
          2. 4.4.1.2.2 2-Core OpenSSL Data
          3. 4.4.1.2.3 4-Core OpenSSL Data
    5. 4.5 Graphics Example Use Case
      1. 4.5.1 glmark2
        1. 4.5.1.1 glmark2 Setup
        2. 4.5.1.2 glmark2 Data
    6. 4.6 High Activity Concurrency Tests
      1. 4.6.1 4-Core Dhrystone + glmark2
        1. 4.6.1.1 4-Core Dhrystone + glmark2 Setup
        2. 4.6.1.2 4-Core Dhrystone + glmark2 Data
      2. 4.6.2 4-Core Stress-ng + glmark2
        1. 4.6.2.1 4-Core Stress-ng + glmark2 Setup
        2. 4.6.2.2 4-Core Stress-ng + glmark2 Data
      3. 4.6.3 4-Core Stream + glmark2
        1. 4.6.3.1 4-Core Stream + glmark2 Setup
        2. 4.6.3.2 4-Core Stream + glmark2 Data
    7. 4.7 Application Demos
      1. 4.7.1 HMI Demo
        1. 4.7.1.1 HMI Demo Setup
        2. 4.7.1.2 HMI Demo Data
      2. 4.7.2 DMS Demo
        1. 4.7.2.1 DMS Demo Setup
        2. 4.7.2.2 DMS Demo Data
  8. 5Limitations
    1. 5.1 Low Power Mode Measurement Discrepancy
    2. 5.2 Measurement Methods
    3. 5.3 Starter Kit EVM I/O Rails
  9. 6References
  10.   Appendix
    1.     A.1 Summary Table
    2.     A.2 How to Change the A53 Core Speed

5.1 Low Power Mode Measurement Discrepancy

Low Power Mode test results for Deep Sleep measurements demonstrated a range of results from 25-34mW. This is expected for several reasons: First, the VDD_DDR4 (and LPDDR4) rail sources power to both the AM62x SoC DDR IO rails, as well as the DDR IC power-supply rails. Per the table found in Starter Kit EVM Rails, there will be power consumed on the DDR rail by the DRAM IC. More information can be found about the expected power consumed by the Micron DDR IC in their device specific App Notes. Often the values needed to evaluate are ‘IDD6N, Self Refresh Current’, for LPDDR4 and DDR4 memory types.

An additional reason for varying power measurements in the Deep Sleep modes is due to the IO power supply rails are not yet optimized with internal Pull Ups and Pull Downs for Deep Sleep modes, for each AM62x variant board type. The default resistor configuration does not follow recommendations from the legacy Sitara AM335x Low Power Design Guide.