直接存储器访问

Transfer of image data is often one of bottle neck of the system. DMA should be used as often as possible to transfer block data, in order to alleviate the press of data transfer.

在实时图像处理中，图像数据的传输常常是系统性能的一个瓶颈，为此应尽可能地使用直接存储器访问(DMA， Direct Memory Access)来传送块状数据，以缓解数据传输的压力。

In addition,this system uses plenty of Extended Direct Memory Access to transport and process image data,which results in stable and high performance.

在数据传输和处理过程中大量使用扩展的直接存储器访问(Extended directmemory access，EDMA)来加快处理数据的速度并提高了系统的性能。

A FLASH Direct Memory Access technique has been adopt for high-speed data transport between FLASH memory and data buffer.

研究并实现了FLASH存储器的直接存储访问控制技术，极大地提高了数据存取速度。

The primary users, he said, are large semiconductor companies that employ Esterel to design specific types of control IP, including blocks for power management, memory management and direct memory access.

他说主要的用户是大的半导体公司，它们用Esterel来设计特殊类型的控制IP，包括用于电源管理、存储器管理和直接存储器访问的模块。

Into memory,Direct memory access,DMA,is a method used to

直接存储器访问就是在数据传输中绕过 CPU

Direct memory access, DMA, is a method used to bypass the CPU in these transfers, thus performing them much more quickly.

直接存储器访问就是在数据传输中绕过CPU的一种方法，因此执行起来速度很快。

This feature is for the hard disk and CD-ROM drive Direct Memory Access (DMA, Direct Memory Access acronym) to maximize system performance upgrade, because personal computers are now the biggest bottleneck is the disk input and output.

这个特性是针对硬盘以及光盘驱动器的直接存储器访问(DMA，Direct Memory Access的缩写)来最大限度提升系统性能，因为现在个人计算机的最大瓶颈就是在磁盘的输入输出上。

Precise control of the system is further facilitated by a ring around the Controller made of extra-hard rubber, and to ensure even more intuitive use, the iDrive control system in the new BMW 6 Series comes complete with six programmable memory keys allowing direct access to selected functions, such as a favorite phone number or navigation destination.

该系统的精确控制，进一步促进了周围的额外硬橡胶主环，并确保使用更直观，在新的宝马6系的iDrive控制系统，配备了6个可编程存储器允许直接访问键完成选定的功能，如电话号码或喜爱的航行目的地。

TL084MJ Pinout: 3.3V Operation with 5V Tolerant Buffers ACPI 1.1, PC99/PC2001 Compliant LPC Interface with Clock Run Support Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems 15 Direct IRQs Four 8-Bit DMA Channels ACPI SCI Interface nSMI Shadowed write only registers Internal 64K Flash ROM Programmed From Direct Parallel Interface, 8051, or LPC Host 2k-Byte Lockable Boot Block Can be Programmed Without 8051 Intervention Three Power Planes Low Standby Current in Sleep Mode Intelligent Auto Power Management for Super I/O ACPI Embedded Controller Interface Configuration Register Set Compatible with ISA Plug-and-Play Standard (Version 1.0a) High-Performance Embedded 8051 Keyboard and System Controller Provides System Power Management System Watch Dog Timer 8042 Style Host Interface Supports Interrupt and Polling Access 256 Bytes Data RAM On-Chip Memory-Mapped Control Registers Access to RTC and CMOS Registers Up to 16x8 Keyboard Scan Matrix Two 16 Bit Timer/Counters Integrated Full-Duplex Serial Port Interface Eleven 8051 Interrupt Sources Thirty-Two 8-Bit, Host/8051 Mailbox Registers Thirty-six Maskable Hardware Wake-Up Events Fast GATEA20

TL084MJ引脚说明： 3.3V工作电压为5V容错缓冲器的ACPI 1.1，PC99/PC2001符合LPC接口与时钟运行支持-兼容串行接口与串行的IRQ IRQ的支持PCI系统- 15直接的IRQ - 4个8位DMA通道- ACPI的SCI接口- nSMI -阴影只写寄存器内部的64K的Flash ROM -直接从程序并行接口，8051，还是LPC主机-的2K字节可锁定引导块-可在不干预程序8051三力飞机-低待机电流在休眠模式-智能型自动电源管理的超级I / O的ACPI嵌入式控制器接口配置寄存器设置兼容的ISA拆开的播放标准（版本1.0a）高性能嵌入式8051键盘和系统控制器-提供系统电源管理-系统监视狗定时器- 8042型主机接口-支持中断和轮询访问- 256字节数据RAM -片上存储器映射控制寄存器-获取实时时钟和CMOS寄存器-最多16x8矩阵键盘扫描- 2个16位定时器/计数器-综合全双工串行接口- 11个中断源8051 - 32个8位，Host/8051邮箱寄存器- 36个可屏蔽硬件唤醒事件-快速GATEA20

Furthermore, if one or more small data blocks accessed before exist among its corresponding large block of data to be expelled from the fully associative buffer, the small block accessed is copied to the direct-mapped cache.

而且，如果以前被访问的一个或多个小数据块，存在于它的将要从完全联系的缓冲器中挤出的相对应的大块数据之中，就将被访问的小块复制到直接映射的高速缓冲存储器中。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。