MISA OPTION CloudGate, Техническая документация инструкция

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Option CloudGate - Last updated on 14/05/2014
Internal Power Circuits
The voltage applied by the power adapter to the CloudGate is converted into different voltage levels
by the main board. Two different power circuits make five different voltage rails.
Dedicated high current power circuit
Provides two different voltage rails which both can deliver high current levels:
●
V_PWR: Is the voltage level of the power adapter limited to 1.2A. A little voltage drop lower than 1V
❍
will be caused by the protection circuit.
3V4: A 3.4V power rail made by a dedicated power circuit which is used on the main board but
❍
also accessible by the expansion boards
Low power circuit generated by the micro controller
Provides three voltage rails for very limited power:
●
3V3: A 3.3V power rail provided by the micro controller is used on the mainboard but also
❍
accessible to the expansion boards
1V8: A 1.8V power rail provided by the micro controller and only used on the main board
❍
1V2: A 1.2V power rail provided by the micro controller and only used on the main board
❍
Voltage
Rail
Voltage Usage Max Current
V_PWR Equals the applied voltage
of the power adapter Use for power-hungry
devices
Current is limited to 1.2A
3V4 3.4V Powers all standard digital
components on the
expansion cards 3A maximum of which the
main board is already using
1.5A. Only 1.5A is left for
both expansion cards.
(The sum of both expansion
cards should be lower than
1.5A
3V3 3.3V Powers low power
components or level
translators from I/O signals
on expansion connectors
towards other components
used the expansion cards Powers low power
components or level
translators from I/O signals
on expansion connectors
towards other components
used the expansion cards
1V8 1.8V Internal use only Internal use only
1V2 1.2V Internal use only Internal use only