Analog Devices 82-000845-01 manual System Architecture

System Architecture

System Architecture

Ablock diagram of the Blackfin USB-LAN EZ-Extender is shown in Figure 2-1.

MII

SMSC Connector

(BF537 Only)

					ADDR[15:1]
	Expansion
					DATA[31:0]
		Interface
			from
	BlackFIN				CNTRL
EZ-KIT Lites
			5.0V	3.3V
		Regulation			3.3V
			Circuitry		2.5V
					Power
					Over
					Ethernet
					Ciruitry

Buffer

Driver

3.3V

Da[15:0]

16bit Bus Swt

Mux Db[15:0]

3.3V

16bit Da[31:16] Bus

Swt

3.3V

	Ethernet
	Connector
				3.3V
		SMSC
ADDR[15:1]
DATA[31:0]	LAN91C111
CNTRL		(Ethernet)
				3.3V
ADDR[5:1]			Netchip
	2.5V
			NET2272
DATA[15:0]
		(USB 2.0)
CNTRL
		USB
		Conn

Figure 2-1. Block Diagram

2-2 Blackfin USB-LAN EZ-Extender Manual