COM200221 Datasheet, PDF (1/82 Pages) SMSC Corporation – 10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Chip RAM

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 -40^oC to +85^oC
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