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NDAS2012 Datasheet
Fast Ethernet NDAS controller for
NDAS enabled storage devices
Features
• Full duplex Fast Ethernet MAC
• ATA/ATAPI v6 interface
• High sustained data transfer rate up to 100Mbps
• Authentication/data encryption
• ATAPI UDMA(up to 33MB/s) support for high data transfer rate
• Dual HDD volume support for master and slave disks
• ATA/ATAPI DMA support BIG-LBA (LBA48)
• Supports automatic power saving-mode
• Integrated power control logic
• Low voltage interface
• Compliant with Fast Ethernet standards
• Simultaneous multi-user(up to 64 users) support
Ethernet Specific Features
• NDAS2012 controller supports L2 level switching functions and uses Ether type of 0x88AD

Figure 1. Functional Block Diagram
General Description
The NDAS3012 controller uses NDASTM network directly attached storage technology to support data transport to/from the ATA/ATAPI devices (HDD, MO, CD-ROM, DVD-ROM, and etc.) through 1Gbps Ethernet links.
NDAS3012 controller receives disk operation commands from the host through Ethernet and converts the commands to native command sequence to ATA/ATAPI interface. NDAS3012 controller is a high performance protocol converter between ATA/ATAPI commands and ATA/ATAPI devices data transport requests.
NDAS3012 controller facilitates the network directly attached storage technology by directly interfacing ATA/ATAPI devices to the Ethernet. NDAS3012 controller along with the host system driver software provides versatile, scalable, sharable, and expandable network directly attached storage solutions.