Inc. SHARC USB EZ-Extender User Manual

SHARC USB EZ-Extender Manual 1-3
USB EZ-Extender Interface
You can reset the NetChip 2272 device by asserting
LOW these flag pins:
• FLAG2 on the ADSP-21262 and ADSP-21364 processors
• FLAG0 on the ADSP-21369 processor
The USB interrupt request pin (IRQ) line of the extender connects to
FLAG1 on the ADSP-21262, ADSP-21364, and ADSP-21369 processors.
This flag pin may be used for push buttons or LEDs on the respective
EZ-KIT Lites; consequently, the user must make the proper changes to
that EZ-KIT Lite.
When writing to and reading from the USB device using the EZ-KIT
Lites, use memory addresses listed in Table 1-1.
Table 1-1. USB Device Memory
EZ-KIT Lite Starting Address Ending Address
ADSP-21262 0x0100 6C00 0x0100 6FE0
ADSP-21364 0x0100 6C00 0x0100 6FE0
ADSP-21369 0x0C00 0000 0x0C00 03E0