Usb Hosts - OLIMEX OLinuXino-MAXI User Manual

OLIMEX© 2012 OLinuXino User's Manual
Below you can find the GPIO_CON as seen in the schematic:
When looking at the bottom of OLinuXino-MAXI near the GPIO connector there is also an
additional GND pad named GND_PIN which is a fast way to have access to a ground signal.

6.5 USB HOSTs

The USB hosts and the Ethernet are controller by a single chip (LAN9512) which handles both
functionality.
The LAN9512 contains a Hi-Speed USB 2.0 hub with two fully-integrated downstream USB 2.0
PHYs, an integrated upstream USB 2.0 PHY, a 10/100 Ethernet MAC/PHY controller, and an
EEPROM controller. It offers SMSC's highest level of USB 2.0 and 10/100 Ethernet compliance
and interoperability. Additionally, the LAN9512 devices simplify system design by leveraging the
existing USB stack and reducing the PCB footprint by up to 65% compared to discrete competitive
solutions. USB-based networking technology offers a cost-effective and smart design alternative to
traditional PCI/PCI-Express networking solutions due to the flexibility of routing and placement of
Ethernet and USB connectivity ports.
The big advantage of having USB hosts available over USB devices is that you can use them to
power devices.
Page 31 of 48