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COM200221

10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Chip RAM

SMSC -> Microchip 

COM20022I

10 Mbps ARCNET

(ANSI 878.1) Controller

with 2Kx8 On-Chip

RAM

Product Features

ƒ New Features

− Data Rates up to 10 Mbps

− Selectable 8/16 Bit Wide Bus With Data Swapper

− Programmable DMA Channel

− Programmable Reconfiguration Times

− 48 Pin TQFP Package; Lead-Free RoHS

Compliant Package also available

ƒ Ideal for Industrial/Factory/Building Automation

and Transportation Applications

ƒ Deterministic, (ANSI 878.1), Token Passing

ARCNET Protocol

ƒ Minimal Microcontroller and Media Interface

Logic Required

ƒ Flexible Interface For Use With All

Microcontrollers or Microprocessors

ƒ Automatically Detects Type of Microcontroller

Interface

ƒ 2Kx8 On-Chip Dual Port RAM

ƒ Command Chaining for Packet Queuing

ƒ Sequential Access to Internal RAM

ƒ Software Programmable Node ID

Datasheet

ƒ Eight, 256 Byte Pages Allow Four Pages TX and

RX Plus Scratch-Pad Memory

ƒ Next ID Readable

ƒ Internal Clock Scaler and Clock Multiplier for

Adjusting Network Speed

ƒ Operating Temperature Range of -40oC to +85oC

ƒ Self-Reconfiguration Protocol

ƒ Supports up to 255 Nodes

ƒ Supports Various Network Topologies (Star,

Tree, Bus...)

ƒ CMOS, Single +5V Supply

ƒ Duplicate Node ID Detection

ƒ Powerful Diagnostics

ƒ Receive All Packets Mode

ƒ Flexible Media Interface:

− Traditional Hybrid Interface For Long Distances up

to Four Miles at 2.5Mbps

− RS485 Differential Driver Interface For Low Cost,

Low Power, High Reliability

SMSC COM20022I

Page 1

DATASHEET

Revision 09-27-07

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