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| 公开报价: |
10950 |
| 产品介绍: |
the digi datafire sync/570i family of synchronous wan communication adapters is a cost-effective line of products for lan-to-lan, client-to-lan and client-to-ibm host connectivity. it is ideal for branch office and enterprise solutions where two to 16 ports per server are required. as a complete hardware and software solution, the datafire sync/570i provides tightly integrated remote lan connectivity for major operating system environments including windows nt® 4.0, windows® 2000 and windows xp. additional support for other operating systems is offered by our software partners.
the product family includes two- and four-port models for pci platforms and offers a universal interface bus (uib) capable of supporting a different interface on each individual port. no jumpers or switches are needed — simply connect the cable for the selected interface. all models have an advanced feature set allowing them to support line speeds up to t1/e1. these features include a design based on the hitachi hd64570 serial communications adapter (sca) chip. this highly integrated sub-system supports two synchronous serial ports and four dma channels, plus interrupt and timer logic. in addition, it has many protocol-specific features designed to maximize performance by minimizing driver overhead.
the key to the performance of the datafire sync/570i is its direct memory access (dma)-to-shared memory architecture. its on-board 256k memory is directly addressable by both the system and the dma of the sca. program-initiated dma transfers operate at dma/memory speed independently of other system activity. this results in reduced system overhead and aggregated hardware line speeds of up to 5 mbps.
ddks for quick and easy porting
digi provides datafire development tools to access and control protocols supported by digi’s wan interface adapters for platform-independent software development. all of the necessary product information to develop a program with sna emulation, x.25 or frame relay can be found in the ddk.
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