Main Board
The CloudGate 3G Americas Rev 3 is designed around a main board containing a 3G
WWAN module. The processor on the main board controls all the interfaces. The WWAN
module provides the wireless connectivity to the internet.
The CloudGate also has two expansion board connectors to allow insertion of
dedicated expansion cards.
The block diagram shows the overview.
Main Board Block Diagram (PDF)
Power Input
V_PWR: min 9V DC, max 33V DC
Internal Power Supply
Power input: V_PWR, min 9V DC, max 33V DC
Stable 3.4V power rail
Reverse polarity protection
Over-voltage protection up to 60V
Current limiter at 1.2A
One-time fuse of 2A
Main Board Processor
Freescale i.MX280 @ 450MHz
128 MB RAM
512 MB Flash memory
Ethernet interface
interfaces to the two expansion board connectors
Primary Expansion Card Slot
The primary expansion card slot is located at the front side of the CloudGate.
It has the following interfaces:
Power supply: V_PWR, 3V4, 3V3
24 Mhz clock signal
Master reset signal
High speed USB interface
High speed OTG USB interface
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