Analog Devices Blackfin EZ-Extender 82-000845-01, Руководство пользователя

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Ethernet Interface
1-4 Blackfin USB-LAN EZ-Extender
The USB IRQ line of the extender connects to
PF10
on the ADSP-BF533
and ADSP-BF561 processors,
PF7
on the ADSP-BF537 processors. These
flag pins 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 from
Table 1-1 .
Ethernet Interface
The USB-LAN EZ-Extender allows you to connect a 10/100 Mbps Ether-
net chip to a Blackfin processor. SMSC’s LAN91C111 device ties directly
to the asynchronous memory bank 3 of the Blackfin processor. You can
read from and write to the Ethernet controller by directly addressing the
named memory bank.
You can reset the Ethernet processor by asserting the board reset on the
ADSP-BF533 and ADSP-BF561 EZ-KIT Lites. The reset connects to a
supervisory reset circuit managed by the Analog Devices ADM708 IC
device. ADM708 also asserts a reset to the Ethernet chip at power-up.
The Ethernet IRQ line connects to the
PF9
flag pin of the ADSP-BF533
processor and
PF9
of the ADSP-BF561 processor. The flag pins may be
used for push buttons or LEDs on the respective EZ-KIT Lite; conse-
quently, the user must remember to make the proper changes to that
EZ-KIT Lite. The switch settings required for each of the respective
Table 1-1. USB Device Memory
Device Connects to Starting Address Ending Address
ADSP-BF533 EZ-KIT Lite
0x2030 0000 0x2030 007F
ADSP-BF537 EZ-KIT Lite
0x2030 0000 0x2030 007F
ADSP-BF561 EZ-KIT Lite
0x2C00 0000 0x2C00 007F
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