COM20020_00 Datasheet, PDF (1/82 Pages) SMSC Corporation – Universal Local Area Network Controller with 2K x 8 On-Board RAM

COM20020 3.3V
COM20020 3.3V ULANC
Universal Local Area Network Controller
with 2K x 8 On-Board RAM
FEATURES
ƒ New Features
- Data Rates up to 5 Mbps
- Programmable Reconfiguration Times
ƒ 24 Pin DIP, 28 Pin PLCC Package
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
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 +3.3V 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
ORDERING INFORMATION
Order Numbers:
COM20020ILJP3V
28 PLCC Package
COM20020IP3V
24 DIP Package
DISCONTINUED DATASHEET