Reference Manual

Module specifications Power consumption
ConnectCore® 8X System-on-Module Hardware Reference Manual --
Preliminary
98
Power consumption
This section contains information about the power consumption of the ConnectCore 8X System-on-
module. All measurements were performed on the ConnectCore 8X SBC platform running Digi
Embedded Yocto.
All presented results were measured at ambient temperature (25ºC).
Note These power consumption numbers should be considered guidelines only, never as fixed or
absolute values. Actual values will depend entirely upon individual setup and system application.
Power consumption use cases
The power consumption of the ConnectCore 8XSystem-on-module was evaluated in the following use
cases:
KS0 - Power off mode
Long-term power off state. In this mode, the power-on key can be asserted to start the device.
Resumption is done via a full reboot.
You can enter this mode by issuing the following command:
~# poweroff
KS1 - Standby mode
Low power mode state that allows system restart without a full reboot. The logic state of the system
is stored in RAM, which stays in self-refresh state. Resumption is done via a wake-up event, which
causes the system to perform a warm boot.
You can enter this mode by issuing the following command:
~# standby
KS2 - System idle
System stays in Idle mode:
n Linux is alive but idle, waiting for an event. CPU is halted waiting for interrupt.
n Only one CPU core is enabled.
n The GPU is not working.
n Screens are off so no significant I/O to DDR is occurring.
KS3 - User Idle mode
Fully loaded and running OS, with an active display waiting for a command on the UI with the following
conditions:
n Linux is operating.
n GPU and CPU complexes are powered but in IDLE state
n 10" display is on.
Complex power consumption use cases
The following use cases define real scenarios where CPU and GPU are stressed: