COM20020I 3.3V
5Mbps ARCNET (ANSI
878.1) Controller with
2K x 8 On-Chip RAM
Datasheet
Product Features
New Features:
-
-
Data Rates up to 5 Mbps
Programmable Reconfiguration Times
Eight, 256 Byte Pages Allow Four Pages TX and
RX Plus Scratch-Pad Memory
Next ID Readable
Internal Clock Scaler and Clock Multiplier for
Adjusting Network Speed
o
o
Operating Temperature Range of -40 C to +85 C
28 Pin PLCC and 48 Pin TQFP Packages;
Lead-free RoHS Compliant Packages also
available
Ideal for Industrial/Factory/Building Automation
and Transportation Applications
Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol
Minimal Microcontroller and Media Interface
Logic Required
Flexible Interface For Use With All
Microcontrollers or Microprocessors
Automatically Detects Type of Microcontroller
Interface
2Kx8 On-Chip Dual Port RAM
Command Chaining for Packet Queuing
Sequential Access to Internal RAM
Software Programmable Node ID
Self-Reconfiguration Protocol
Supports up to 255 Nodes
Supports Various Network Topologies (Star, Tree,
Bus...)
CMOS, Single +3.3V Supply
Duplicate Node ID Detection
Powerful Diagnostics
Receive All Packets Mode
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 COM20020I 3.3V
1
Revision 12-06-06
DATASHEET
SMSC [ SMSC CORPORATION ]
