查询词典 DMA

And the on chip data memory is byte addressable double data buffer structure, so that the unaligned data load and store can be supported and data can be prepared by DMA engine concurrently with computing.Finally, a video application specific SoC platform design and optimize. In video SoC platform, the embedded RISC processor and EDO-SIMD video processing engine were integrated with the DMA and LCDC etc. IP based on AMBA SoC interconnection and dedicated communication channel.

在片上数据存储的设计中，采用了Byte可寻址的双data-buffer的策略，既可以支持内存的非对齐访问，又可通过DMA并发完成数据的搬运。3视频处理SoC平台的设计基于AMBA总线和主要处理引擎间专用信道的SoC互连，以嵌入式RISC处理器和基于EDO-SIMD指令体系的视频处理擎为核心，配以DMA和内存控制器等外设，构成了一个基本的异构多核视频处理SoC平台原型。

Since the motherboard with the soft, hard disk, such as the use of DMA operations between the peripheral, DMA operation of the response process is as follows (AST386 in the floppy disk to DMA as an example): floppy disk drive made by DREQ2 signal to the DMA controller (82C206), and DMA controller to the CPU (80386) issued HRQ signal, CPU end the current bus cycle after HLDA response signal to the DMA controller, DMA controller issued a final response signal DMA to the floppy disk drive DACK2 allow its data into the system bus.

由于主板与软、硬盘等外设之间采用DMA操作，DMA操作的应答过程如下(以AST386中软盘DMA为例)：先由软盘驱动器发DREQ2信号给DMA控制器(82C206)，然后DMA控制器向CPU(80386)发HRQ信号，CPU结束当前总线周期后发响应信号HLDA给DMA控制器，最后DMA控制器发DMA响应信号DACK2给软盘驱动器允许其数据进入系统总线。

For example, a PC's ISA DMA controller has 8 DMA channels of which 7 are available for use by the PC's CPU.

举个例子， PC ISA DMA 控制器拥有 8 个 DMA 通道，其中的 7 个通道是可以让 PC 的 CPU 所利用。

DMA controller IP core, and ATA controller tie, DMA can achieve high-speed transmission of data.

DMA的控制器的IP核，和ATA控制器配合，可以实现DMA方式高速传输数据。

DMA transfers are managed by a third peripheral calleda DMA controller.

DMA 传输由叫 DMA 控制器的第三方外设进行管理。

DMA transfers are managed by a third peripheral called a DMA controller.

DMA传输由叫DMA控制器的第三方外设进行管理。

DMA transfers aremanaged by a third peripheral called a DMA controller.

DMA传输由叫DMA控制器的第三方外设进行管理。

DMA transfers are managed by a thirdperipheral called a DMA controller.

DMA传输由叫DMA控制器的第三方外设进行管理。

DMA transfers are managed by a t hird peripheral called a DMA controller.

DMA 传输由叫 DMA 控制器的第三方外设进行管理。

One was that one molecule of nitrous acid di-rectly reacted with DMA,and the other was that two molecules of nitrous acid reacted first to yield nitrogen trioxide,which then reacted with DMA.

计算结果表明，DMA与亚硝酸间接反应的活化能比直接反应的低约55kJ/mol，由此可推断DMA与亚硝酸生成NDMA的反应是以两分子的亚硝酸先生成ONNO2再亚硝化DMA为主要反应途径。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。