Datasheet Microchip COM20022i — 数据表

COM20022I
10 Mbps ARCNET
(ANSI 878.1) Controller
with 2Kx8 On-Chip
RAM
Datasheet Product Features
Вѓ New Features
--Вѓ 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 Ideal for Industrial/Factory/Building Automation
and Transportation Applications Вѓ Eight, 256 Byte Pages Allow Four Pages TX and
RX Plus Scratch-Pad Memory Вѓ Next ID Readable Вѓ Internal Clock Scaler and Clock Multiplier for
Adjusting Network Speed Вѓ Operating Temperature Range of -40oC to +85oC Вѓ Self-Reconfiguration Protocol Вѓ Supports up to 255 Nodes Вѓ Supports Various Network Topologies (Star,
Tree, Bus.) Вѓ Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol Вѓ Minimal Microcontroller and Media Interface
Logic Required Вѓ CMOS, Single +5V Supply Вѓ Flexible Interface For Use With All
Microcontrollers or Microprocessors Вѓ Duplicate Node ID Detection Вѓ Powerful Diagnostics Вѓ Automatically Detects Type of Microcontroller
Interface Вѓ Receive All Packets Mode Вѓ 2Kx8 On-Chip Dual Port RAM Вѓ Command Chaining for Packet Queuing Вѓ Sequential Access to Internal RAM Вѓ Software Programmable Node ID SMSC COM20022I Вѓ Flexible Media Interface:
-Traditional Hybrid Interface For Long Distances up
to Four Miles at 2.5Mbps …