TMC2074中文资料Digital Temperature Sensor Products数据手册Microchip规格书

描述 Description

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.The TMC2074 has two operational modes: \"Peripheral Mode\" and \"Standalone Mode\". It can operate with or without the existence of a system CPU on a network node. In Peripheral Mode, the TMC2074 has 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 TMC2074 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 TMC2074 has 8-bit programmable I/O available. When operating in Standalone mode, the TMC2074's I/O configuration is16-bit. The TMC2074 also integrates a 3-port hub (two ports for external connection) to accommodate various network topologies (Bus, Star, etc.) and combinations.

特性 Features

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 RoHS Compliant Package
• Temperature Range from 0 to 70 Degrees C

简介

TMC2074属于集成电路（IC）的控制器。由Microchip制造生产的TMC2074控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。