General Description

About TMC2074

The TMC2074 network controller is CircLink technology’s flagship product. The TMC2074’s flexibility and rich feature set enable a high-reliability and high-performance, real-time and control-oriented network without the cumbersome middle layer protocol stacks and complex packet prioritization schemes typically required.

TMC2074 operates at network data transfer rates up to 5 Mbps. Its embedded 1 kByte RAM can be configured into a maximum of 32 pages to implement a 31-node network where each node in the network has the same local memory.

PRODUCT FEATURES

? Low Power CMOS, 3.3 Volt Power Supply with 5 Volt Tolerant I/O

? Supports 8/16-Bit Data Bus

? Both 86xx and 68hxx Platforms

? 1K On-chip Dual Port Buffer Memory

? Sequential I/O Mapped Access

? Enhanced Token Passing Protocol from ARCNET

? Maximum 31 Nodes per Network

? Token Retry Mechanism

? Maximum 256 Bytes per Packet

? Consecutive Node ID Assignment

? Memory Mirror

? Shared Memory within Network

? Network Standard Time

? Network Time Synchronization

? Automatic Time Stamping

? Coded Mark Inversion

? Intelligent 1-Bit Error Correction

? Magnetic Saturation Prevention

? Dual Operation Modes

? Peripheral (Host) Mode Operates with MCU

? Standalone (I/O) Mode Operates without MCU

? Supports 8 Bit Programmable General Purpose I/O at peripheral Mode

? Supports 16 Bit Input and 16 Bit Output at Standalone Mode

? Dual Communication Modes (with Peripheral Mode)

? Free Format Mode

? Remote Buffer Mode

? 3 Port Hub Integrated

? 1 Internal and 2 External

? Flexible Topologies

? Bus, Star and Tree

? Low Cost Media can be Used

? RS485 Differential Driver

? Fiber Optics and Twisted Pair Cable Supported

? 128-Pin VTQFP Package; Green, Lead-free Package also Available

? Temperature Range from 0 to 70 Degrees C