VF61 Power Consumption in different operating conditions

Technical Support
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1

I’ve just downloaded VFxx datasheet rev. 1.8 from Toradex website, but I can’t find any info on typical power consumption for VF61 in the different operating conditions (see here).
I’m interested in a module running WinCE 6.

Could you provide such kind of information, please?

3

Here are some power consumption measurement results that I can share with you:

VF61 Power Consumption

Please note, this are typical values that have been measured at room temperature. The module has been running our Linux image on the main A5 core. The M4 core was left unused. Unfortunately, I do not have any power consumption results while running WinCE. But the results should be in the same range.

Here some more details to the condition of the module:

Idle

Connected: USB-UART and power. Screen resolution set to default (640x480)

Code: /

1 Core

Connected: USB-UART and power. Screen resolution set to default (640x480)

Code: stress –c 1

Headless (CPU idle)

Connected: USB-UART and power. Screen resolution set to OFF

Code:

Boot to Linux, enter the following code:

systemctl set-default multi-user.target

reboot

Headless (CPU full)

Connected: USB-UART and power. Screen resolution set to OFF

Code: See above but additional:

Stress –c 4

Ethernet Idle Fast (CPU full)

Connected: Ethernet, USB-UART and power. Screen resolution set to default (640x480).

Code: stress –c 4

Ethernet Full Load Fast (CPU full)

Connected: Ethernet, USB-UART and power. Screen resolution set to default (640x480).

Code: Start an iperf3 server on the PC with iperf3 –s

Connect from module to the server with iperf3 –c 192.168.10.x

Floating Point/Neon

Connected: USB-UART and power. Screen resolution set to default (640x480)

Required package: cpuburn-neon_20140626-r0_armv7at2hf-vfp-neon.ipk

Code: opkg install cpuburn-neon_20140626-r0_armv7at2hf-vfp-neon.ipk --nodeps

Burn-neon

Suspend

Connected: USB-UART and power. Screen resolution set to default (640x480)

Code: echo mem > /sys/power/state

Note: All measurements done with a modified Colibri Evaluation Board which has jumper J26 assembled and resistors R166, R165, R164, R163, R162, R161, R160 removed. All measurements have been done there (except internal RTC). Connected two Multimeters, both set to measure voltage. One measures the voltage drop across the module, one across the JP25 (0.055 ohms resistance).