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COM20020I_0609 Datasheet, PDF (1/69 Pages) SMSC Corporation – 5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM | |||
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COM20020I 3.3V Rev.E
5Mbps ARCNET (ANSI
878.1) Controller with
2K x 8 On-Chip RAM
Product Features
 New Features:
- Data Rates up to 5 Mbps
- Programmable Reconfiguration Times
 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
Datasheet
 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
 Operating Temperature Range of -40oC to +85oC
 3.3V power supply with 5V tolerant I/O
 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
at 2.5Mbps
- RS485 Differential Driver Interface For Low
Cost, Low Power, High Reliability
ORDERING INFORMATION
Order Number(s):
COM20020I 3VLJP for 28 pin PLCC * package
COM20020I 3V-DZD for 28 pin PLCC * Lead-Free RoHS Compliant package
COM20020I 3V-HD for 48 pin TQFP package
COM20020I 3V-HT for 48 pin TQFP Lead-Free RoHS Compliant package
* TQFP package is recommended for new design
SMSC COM20020I 3.3V Rev.E
1
DATASHEET
Revision 09-11-06
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