2.3
Electrical Specifications
According to Qseven
®
specifications,
μ
Q7-962 module 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
μ
Q7-962 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.
Module configuration
Average Power
consumption
i.MX6Quad @ 1GHz, 2GB LDDR3 memory, 8GB eMMC Disk
<5W
i.MX6Dual
TBM
i.MX6DualLite @ 1GHz, 1GB LDDR3 memory, 4GB eMMC Disk
<3W
i.MX6Solo Automotive @ 800MHz, 512MB LDDR3 memory, 4GB eMMC Disk
<2W
Please consider that power consumption is strongly dependent on the board
’
s configuration, on number of processor cores active and from the interfaces that are
SW enabled. PCI-express and SATA interface are particularly significant for power consumption, so it is strongly recommended to disable them (via SW) if they are
not used.
2.3.2
Power Rails meanings
In all the tables contained in this manual, Power rails are named with the following meaning:
_S: Switched voltages, i.e. power rails that are active only when the board is in ACPI
’
s S0 (Working) state. Examples: +3.3V_S, +5V_S.
_A: Always-on voltages, i.e. power rails that are active both in ACPI
’
s S0 (Working), S3 (Standby) and S5 (Soft Off) state. Examples: +5V_A, +3.3V_A.
Other suffixes are used for application specific power rails, which are usually derived from same value of voltage, switched rails (for example, +3.3V_CAM is
derived from +3.3V_S, and so on).
