电工基础知识_电工技术-电工最常见电路移动版

TI公司的AM3359是基于高达1GHz的Sitara™ARM Cortex-A8 32位RISC处理器的工业通信引擎（ICE），具有增强的图像和图形处理，外设和工业接口选择如EtherCAT和PROFIBUS，支持高等级操作系统（HLOS）。还包含NEON™ SIMD协处理器，集成了32KB L1指令和32KB数据缓存，256KB ECC L2缓存，176KB引导ROM，64KB专用RAM，仿真和调试-JTAG，多达128个中断请求的中断控制器，64KB通用片上存储器控制器（OCMC）RAM，主要用在游戏外设，家庭和工业自动化，消费类医疗设备，打印机和智能收费系统。本文介绍了AM3359主要特性，功能框图以及EtherCAT通信开发平台TIDEP0001主要特性，电路图和材料清单。

The AM335x microprocessors， based on the ARM Cortex-A8 processor， are enhanced with image，graphics processing， peripherals and industrial interface options such as EtherCAT and PROFIBUS. Thedevices support high-level operating systems （HLOS）。 Processor SDK Linux® and TI-RTOS are availablefree of charge from TI.

The AM335x microprocessor contains the subsystems shown in the Functional Block Diagram and a briefdescription of each follows：

The contains the subsystems shown in the Functional Block Diagram and a brief description of eachfollows：

The microprocessor unit （MPU） subsystem is based on the ARM Cortex-A8 processor and the PowerVRSGX™ Graphics Accelerator subsystem provides 3D graphics acceleration to support display and gamingeffects.

The PRU-ICSS is separate from the ARM core， allowing independent operation and clocking for greaterefficiency and flexibility. The PRU-ICSS enables additional peripheral interfaces and real-time protocolssuch as EtherCAT， PROFINET， EtherNet/IP， PROFIBUS， Ethernet Powerlink， Sercos， and others.

Additionally， the programmable nature of the PRU-ICSS， along with its access to pins， events and allsystem-on-chip （SoC） resources， provides flexibility in implementing fast， real-time responses， specializeddata handling operations， custom peripheral interfaces， and in offloading tasks from the other processorcores of SoC.

AM3359主要特性：

• Up to 1-GHz Sitara™ ARM® Cortex®-A8 32‑BitRISC Processor

– NEON™ SIMD Coprocessor

– 32KB of L1 Instruction and 32KB of Data CacheWith Single-Error Detection （Parity）

– 256KB of L2 Cache With Error Correcting Code（ECC） (责任编辑：admin)