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TMC2074

Dual Mode CircLink™ Controller

SMSC -> Microchip 

TMC2074

Dual Mode CircLink™

Controller

PRODUCT FEATURES

ƒ Low Power CMOS, 3.3 Volt Power Supply with 5

Volt Tolerant I/O

ƒ Supports 8/16-Bit Data Bus

− Both 86xx and 68hxx Platforms

ƒ 1K On-chip Dual Port Buffer Memory

− Sequential I/O Mapped Access

ƒ Enhanced Token Passing Protocol from ARCNET

− Maximum 31 Nodes per Network

− Token Retry Mechanism

− Maximum 256 Bytes per Packet

− Consecutive Node ID Assignment

ƒ Memory Mirror

− Shared Memory within Network

ƒ Network Standard Time

− Network Time Synchronization

− Automatic Time Stamping

ƒ Coded Mark Inversion

− Intelligent 1-Bit Error Correction

− Magnetic Saturation Prevention

ƒ Dual Operation Modes

− Peripheral (Host) Mode Operates with MCU

− Standalone (I/O) Mode Operates without MCU

Datasheet

ƒ Supports 8 Bit Programmable General Purpose

I/O at peripheral Mode

ƒ Supports 16 Bit Input and 16 Bit Output at

Standalone Mode

ƒ Dual Communication Modes (with Peripheral

Mode)

− Free Format Mode

− Remote Buffer Mode

ƒ 3 Port Hub Integrated

− 1 Internal and 2 External

ƒ Flexible Topologies

− Bus, Star and Tree

ƒ Low Cost Media can be Used

− RS485 Differential Driver

ƒ Fiber Optics and Twisted Pair Cable Supported

ƒ 128-Pin VTQFP Package; Green, Lead-free

Package also Available

ƒ Temperature Range from 0 to 70 Degrees C

SMSC TMC2074

Page 1

DATASHEET

Revision 0.1 (03-29-06)

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