TMC2072
Peripheral Mode CircLink™ Controller
Features
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Low Power CMOS, 3.3 Volt Power Supply with 5 Volt Tolerant I/O |
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Supports 8/16-Bit Data Bus
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Both 86xx and 68hxx Platforms |
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1K On-chip Dual Port Buffer Memory
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Sequential I/O Mapped Access |
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Enhanced Token Passing Protocol from ARCNET
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Maximum 31 Nodes per Network |
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Token Retry Mechanism |
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Maximum 256 Bytes per Packet |
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Consecutive Node ID Assignment
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Memory Mirror
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Shared Memory within Network |
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Network Standard Time
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Network Time Synchronization |
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Automatic Time Stamping |
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Coded Mark Inversion
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Intelligent 1-Bit Error Correction |
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Magnetic Saturation Prevention |
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Single Operation Mode
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Supports Only Peripheral (Host) Mode Operates with MCU |
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Supports 8 Bit Programmable General Purpose I/O |
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Dual Communication Modes (with Peripheral Mode)
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Free Format Mode |
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Remote Buffer Mode |
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3 Port Hub Integrated
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1 Internal and 2 External |
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Flexible Topologies
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Bus, Star, and Tree |
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Low-Cost Media can be Used
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RS485 Differential Driver |
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Fiber Optics and Twisted Pair Cable Supported |
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100-Pin, TQFP Lead-Free RoHS Compliant
Package |
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Temperature Range from 0 to 70 Degrees C |
General Description
The TMC2072 network controller is CircLink technology's flagship product. The TMC2072'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.
TMC2072 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.
TMC2072 supports "Peripheral Mode" operation, which includes two selectable communication modes:"Free Format Mode" and "Remote Buffer Mode". Free Format mode, retained from ARCNET, is "packet oriented" communication. Remote Buffer mode communication is a CircLink-specific feature, and is a token oriented communication, which includes automatic data transmission when the token arrives.
The TMC2072 has a flexible 8-bit or 16-bit databus to interface various CPU types including X86, 68XX, and SHx with multiplexed or non-multiplexed address/data. When operating in Peripheral mode, the TMC2072 has 8-bit programmable I/O available. When operating in Standalone mode, the TMC2072's I/O configuration is16-bit. The TMC2072 also integrates a 3-port hub (two ports for external connection) to accommodate various network topologies (Bus, Star, etc.) and combinations.
ORDERING INFORMATION
Order Number(s):
TMC2072-MT for 100 pin, TQFP Lead-Free RoHS Compliant Package |
 TMC2072
Data Sheet, Application Notes,
Drivers and Design Tools
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