Analog Devices Blackfin EZ-Extender 82-000845-01, Manual

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System Architecture
2-2 Blackfin USB-LAN EZ-Extender Manual
System Architecture
A block diagram of the Blackfin USB-LAN EZ-Extender is shown in
Figure 2-1 .
Figure 2-1. Block Diagram
16bit
Bus
Swt
Mux
Expansion
Interface
from
BlackFIN
EZ-KIT Lites
5.0V 3.3V
3.3V
2.5V
ADDR[15:1]
DATA[31:0]
CNTRL
SMSC
LAN91C111
(Ethernet)
Netchip
NET2272
(USB 2.0)
ADDR[15:1]
DATA[31:0]
ADDR[5:1]
DATA[15:0]
CNTRL
CNTRL
3.3V
3.3V
2.5V
Buffer
Driver
16bit
Bus
Swt
Da[31:16]
Da[15:0]
Db[15:0]
3.3V
3.3V
3.3V
USB
Conn
Power
Over
Ethernet
Ciruitry
Regulation
Circuitry
Ethernet
Connector
MII
SMSC Connector
(BF537 Only)
www.BDTIC.com/ADI