CM5000方案VoIP 网络电话机：

      VoIP是 Voice over Internet Protocol的缩写,指的是将模拟的声音讯号经过压缩与封包之后,以数据封包的形式在IP 网络的环境进行语音讯号的传输,通俗来说也就是互联网电话、网络电话、网络电话机、VoIP网络电话机、或者简称IP电话的意思。VoIP技术是目前互联网应用领域的一个热门话题。VoIP的基本原理是：通过语音的压缩算法对语音数据编码进行压缩处理,然后把这些语音数据按 TCP/IP 标准进行打包,经过 IP 网络把数据包送至接收地,再把这些语音数据包串起来,经过解压处理后,恢复成原来的语音信号,从而达到由互联网传送语音的目的。 IP 电话的核心与关键设备是 IP 网关,它把各地区电话区号映射为相应的地区网关 IP 地址。这些信息存放在一个数据库中,数据接续处理软件将完成呼叫处理、数字语音打包、路由管理等功能。 在用户拨打长途电话时,网关根据电话区号数据库资料,确定相应网关的 IP 地址,并将此 IP 地址加入 IP 数据包中,同时选择最佳路由,以减少传输时延, IP 数据包经 Internet 到达目的地的网关。在一些 Internet 尚未延伸到或暂时未设立网关的地区,可设置路由,由最近的网关通过长途电话网转接,实现通信业务。. . . . . 更多详细 . . . . .

M5642A1方案移动硬盘盒：

     台湾Ali(Acer Laboratories Inc.)的M5642A1是一颗符合USB标准Ver2.0 IDE设备控制器。利用片上USB2.0的收发器,实现480Mbit/s和12Mbit/s的传输速率。M5642适合于设计用于控制UDMA66标准的IDE设备,如ATAPI DVD/CD-ROM、CD/DVD-R/W、ATA接口的硬盘和CF设备。我们可以将M5642看成是M5641 M5621的低成本方案。通过USB-IDE的桥接,可以使得诸如扫描仪、打印机、数字照相机,甚至多功能PC周边产品、通讯、网络产品都可以和PC高速连接。M5642能够根据用户的要求配置成三种不同的用途,如USB到IDE桥、PIO/DMA控制器、UMIT适合USB的标准传输设备。. . . . . 更多详细 . . . . .

美国 XIMETA NDAS 网络芯片：

:NDAS2012:

NDAS2012 Datasheet
Fast Ethernet NDAS controller for
NDAS enabled storage devices

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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. . . . . more. . . . .


Figure 1. Functional Block Diagram

:NDAS3012

NDAS3012 Datasheet
Gigabit NDAS controller for
NDAS enabled storage devices

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Features
• 1Gbps full duplex Ethernet MAC
• ATA/ATAPI v6 Interface
• High sustained data transfer rate up to 1Gbps
• Authentication/data encryption
• ATAPI UDMA(upto 133MB/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 Gigabit Ethernet standards
• Simultaneous multi-user(up to 64 users) support

Ethernet Specific Features
• NDAS3012 controller supports L2 level switching functions and uses Ether type of 0x88AD. . . . . more. . . . .


Figure 1. Functional Block Diagram

: NDAS2011

NDAS2011 Datasheet
Fast Ethernet NDAS controller for
NDAS enabled storage devices

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Features
• Networks connection
• Supports 10/100 Mpbs
• Share the storage in the network
• Supports PC and digital electronics(non PC)
• Highest performance(over 10 MByte/sec)
• Use as local disk drive
• No need to setup IP address or network configuration
• Safe from internet hacking                                                                                                                      . . . . . more. . . . .