2.3
Electrical Specifications
According to Qseven
®
specifications, Q7-928 board needs to be supplied only with an ex5V
DC
power supply.
5 Volts standby voltage needs to be supplied for working in ATX mode.
For Real Time Clock working and CMOS memory data retention, it is also needed a backup battery voltage. All these voltages are supplied directly through card
edge fingers (see connector
’
s pinout).
All remaining voltages needed for board
’
s working are generated internally from +5V_S power rail.
2.3.1
Power Consumption
Q7-928 module, like all Qseven
®
modules, needs a carrier board for its normal working. All connections with the external world come through this carrier board,
which provide also the required voltage to the board, deriving it from its power supply source.
Anyway, it has been possible to measure power consumption directly on +5V_S power rail that supplies the board.
Status
Processor
i.MX6S
i.MX6DL
i.MX6D
i.MX6Q
2GB RAM
OS Ubuntu 12.04
idle at login, output on serial port, no
video
TBM
TBM
TBM
1.7W
idle at login, HDMI display connected, full
HD resolution
TBM
TBM
TBM
1.8W
idle at login, HDMI display connected, full
HD resolution, USB Disk connected
TBM
TBM
TBM
1.9W
With one core at 100% load
TBM
TBM
TBM
2.7W
With 2 cores at 100% load
---
TBM
TBM
3.3W
With 3 cores at 100% load
---
---
---
3.9W
With 4 cores at 100% load
---
---
---
4.6W
