COM20020I_06 Datasheet, PDF (1/65 Pages) SMSC Corporation – 5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

COM20020I 3.3V
5Mbps ARCNET (ANSI
878.1) Controller with
2K x 8 On-Chip RAM
Product Features
ƒ New Features:
- Data Rates up to 5 Mbps
- Programmable Reconfiguration Times
ƒ 28 Pin PLCC and 48 Pin TQFP Packages;
Lead-free RoHS Compliant Packages 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 +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
SMSC COM20020I 3.3V
1
DATASHEET
Revision 12-06-06