S7212WS

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S7212WS is a kind of special programmable switch IC which takes two programmable switches and DMA controller as main features, mainly used in computer and communication applications. It is generally applied to support system local bus, peripheral local bus, ESDI, SCSI, or other intelligent input output device and data transfer.

The working principle of the S7212WS starts with assessing the data transfer rate and capacity. It then compares the system local bus width and the peripheral local bus width. When the process is completed, a data transfer pattern is written to the DMA controller. The controller then prepares the data and the DMA controller sends the data to the switch IC for further transfer to the designated device. Depending on the switch IC configurations, the S7212WS can take multiple datas and transfer them in a sequence or in parallel. Further programming can be applied to the switch IC in order to select desirable transfer rate.

The S7212WS Application fields cover multiple areas such as digital cash register systems, digital point-of-sale systems, personal digital assistants, hard drive controllers, display controllers, and so on. In those systems, the S7212WS was applied to provide fast data transfer rate and excellent compatibility. It could also be used to support wide range of bus with zero wait state due to its advantages of high speed transfer. Recently, due to the development of the technologies, the S7212WS was popular in PDA, industrial control, automatic building control, alphanumeric information systems, and so on.

Therefore, the S7212WS could dramatically save system cost and power consumption by minimizing the logic devices needed to be triggered in communication process. Also, it eliminates the need of board redesign by supporting multiple widths of bus on the same board. Its unparalleled compatibility and expanded features make the S7212WS the preferred choice for a application fields.

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