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S3C4510B 参数 Datasheet PDF下载

S3C4510B图片预览
型号: S3C4510B
PDF下载: 下载PDF文件 查看货源
内容描述: 三星S3C4510B的16位/ 32位RISC微控制器是一款高性价比,高性能的基于以太网的系统微控制器解决方案。 [Samsungs S3C4510B 16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller solution for Ethernet-based systems.]
分类和应用: 微控制器以太网
文件页数/大小: 422 页 / 2160 K
品牌: SAMSUNG [ SAMSUNG ]
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S3C4510B  
DMA CONTROLLER  
Block Mode  
The assertion of only one GDMA request (nXDREQ or an internal request) causes all of the data, as specified by  
the control register settings, to be transmitted in a single operation. The GDMA transfer is completed when the  
transfer counter value reaches zero. The nXDREQ signal can be de-asserted after checking that nXDACK has  
been asserted.  
nXDREQ  
nXDACK  
RD/WR Cycle  
Figure 9-6. External DMA Requests (Block Mode)  
Demand Mode  
In demand mode, the GDMA continues transferring data as long as the GDMA request input (nXDREQ) is held  
active.  
nXDREQ  
nXDACK  
RD/WR Cycle  
Figure 9-7. External DMA Requests (Demand Mode)  
9-9  
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