RAD Data comm MBE10-8D, MBE10-1D operation manual LAN Interface, LAN Processor

Chapter 1 Introduction MBE Family Installation and Operation Manual

Link Interface

V.35/V.24

X.21/

RS-530

4W, ISDN

Power

Supply

Main

Processor

and

Communication

Processor

2MB

DRAM

LAN		LAN
Processor		Interface
	Filtering	(not applicable
ERRORS	Block	to MBE10-1)
LINK
ERRORS	MAIN/REM
LAN
LINK Rx	Switch

LINK Tx

LAN Rx

LAN Tx

READY

MAIN

LAN

CONN

AUI

BNC

UTP

Async

Port

REMOTE

POWER

Control

RJ-45

Figure 1-3. MBE Functional Block Diagram

MBE is comprised of the following main circuits (see Figure 1-3):

•LAN interface

•LAN processor

•Bridge mode filtering block (MBE 10-8 and MBE-10-8D only)

•Link interface

•Main processor and communication processor

•Power supply

•Asynchronous port.

LAN Interface

The LAN interface provides the physical connection to an Ethernet LAN via various media types: UTP (10BaseT), BNC (10Base2), or AUI (10Base5). The LAN interface contains receiver and transmitter functions, and clock extraction.

LAN Processor

The LAN processor performs the Media Access Control (MAC) protocols of the Ethernet, i.e., transmission and reception of frames according to the main processor's requests, and transmission of LAN status information to the main processor.

1-8 Functional Description

Order from: Cutter Networks Ph:727-398-5252/Fax:727-397-9610 www.bestdatasource.com