11
ODROID C1 USER MANUAL
Gigabit Ethernet
The Realtek RTL8211F is a highly integrated Ethernet transceiv-
er that complies with 10Base-T, 100Base-TX, and 1000Base-T IEEE
802.3 standards.
USB MTT hub controller
A GENESYS LOGIC GL852G is used to implement the 4-port
Hub function which fully complies with Universal Serial Bus Specifica-
tion Revision 2.0.
USB VBUS controller
A NCP380 Protection IC for USB power supply from OnSemi.
Boot media selector
If this port is open, the first boot media is always eMMC. If this
port is closed, the first boot media is always microSD card.
Power switch port
You can add a slide switch or rocker switch on this port if you
want to implement a hardware on/off switch. If this port is open, the
power is on. If this port is closed, the power is off.
Power supply circuit
Discrete DC-DC converters LDOs are used for CPU/DRAM/IO
power supply.
Power protector IC
The power protected is a NCP372 over-voltage, over-current,
reverse-voltage protection IC from OnSemi.
Heatsink
Electronic components all generate heat while operating, and
different components generate different levels of heat. Some compo-
nents do not require any cooling, while others do.
Complex components such as the C1 processor may reach tem-
peratures as high as 85°C. At high temperatures, the processor will
throttle itself and operate slower so that temperatures do not continue
to increase.
Some owners prefer that the temperatures do not reach such
high temperatures and install a heatsink, which is available from the
Hardkernel store. Heat transfer from components to the surrounding
air is related to the surface area available to transfer heat to the sur-
rounding air. The processor of the C1 provides a relatively small area
Chapter 1
