Analog Devices 82-000845-01 User Manual download pdf (Page 24)

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

BlackF IN

EZ-KIT Lites

5.0V 3.3 V

3.3V

2.5V

ADDR[15:1]

DATA[31:0]

CNTRL

SMSC

LAN91C111

(Ethernet)

Netchip

NET2272

(USB 2.0)

A DDR[1 5:1]

DATA[31:0]

ADDR[5:1]

DATA[15:0]

CNTRL

3.3V

2.5V

Buff er

Driver

16bit

Bus

Swt

Da[31:16]

Da [15:0]

Db [15:0]

3.3 V

3.3V

USB

Conn

Po wer

Over

Ethernet

Ciru itry

Regulation

Circ uitry

Ethe rnet

Connector

MII

SMS CConnector

(BF537 Only)

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 47 48

Blackfin 1
USB-LAN EZ-Extender 1
Copyright Information 2
Limited Warranty 2
Disclaimer 2
Regulatory Compliance 3
CONTENTS 5
USB-LAN EZ-EXTENDER SCHEMATIC 6
Purpose of This Manual 9
Intended Audience 9
Manual Contents 10
What’s New in This Manual 10
Technical or Customer Support 11
Supported Products 11
Product Information 12
Notation Conventions 13
INTERFACES 15
1 USB-LAN EZ-EXTENDER 15
USB Software 16
USB 2.0 Interface 17
Ethernet Interface 18
Interfaces 19
MII Interface 20
Table 1-4. PHY Devices 21
2 USB-LAN EZ-EXTENDER 23
HARDWARE REFERENCE 23
System Architecture 24
Jumper Settings 25
Power Select Jumper (JP1) 26
LAN Power Jumper (JP2) 27
Link Jumper (JP3) 27
Switch Settings 28
FLAGS Enable Switch (SW1.2) 29
A USB-LAN EZ-EXTENDER BILL 33
OF MATERIALS 33
BLACKFIN USB-LAN EZ-EXTENDER 37
SCHEMATIC 37
A0187-2003 38
EXPANSION INTERFACE 38
BUS SWITCHES 39
POE, MII, PWR SELECTION 42
Product Overview 45
This site is 46
Technical Library 47

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