Datasheet

Blackfin/SHARC USB EZ-Extender Manual 1-3
Blackfin/SHARC USB EZ-Extender Interfaces
USB Software
For information about USB software, refer to the
USB Software Readme.txt file located in the
<install_path>\Blackfin\Examples\USB EZ-EXTENDER or
<install_path>\214xx\Examples\USB EZ-EXTENDER VisualDSP++
directory.
USB 2.0 Interface
The Blackfin/SHARC USB EZ-Extender enables a connection between a
USB 2.0 chip and Blackfin/SHARC processor without any other pro-
grammable logic. The PLX Technology’s NET2272 controller ties directly
to the asynchronous memory bus of the Blackfin or SHARC processor.
You can read from and write to the USB 2.0 controller by addressing the
named memory bank directly.
You can reset the NET2272 controller by asserting LOW one of the four
GPIO signals of the expansion interface. Refer to the appropriate
EZ-Board manual to learn how the GPIO signals connect to the
processor.
The USB IRQ signal of the NET2272 controller connects to one of the
four GPIO signals on the expansion interface. Refer to the appropriate
EZ-Board document to learn how the GPIO signals connect to the
processor.
The USB
CS signal of the NET2272 controller connects to one of the four
AMS signals on the expansion interface. Refer to the appropriate EZ-Board
manual to learn how the
AMS signals connect to the processor.
The jumper settings required for each of the respective EZ-Boards are
described in the
USB Software Readme.txt file located in the
<install_path>\Blackfin\Examples\USB EZ-EXTENDER or