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MT9174 Datasheet(PDF) 4 Page - Zarlink Semiconductor Inc |
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MT9174 Datasheet(HTML) 4 Page - Zarlink Semiconductor Inc |
4 / 28 page MT9173/74 Data Sheet 4 Zarlink Semiconductor Inc. Figure 4 - DV Port - 160 kbit/s (Modes 2, 3, 6) Functional Description The MT9173 and MT9174 are multifunction devices capable of providing high speed, full duplex digital transmission at up to 160 kbit/s over a twisted wire pair. They use adaptive echo-cancelling techniques and transfer data in a format compatible to the ISDN basic rate. Several modes of operation allow an easy interface to digital telecommunication networks including PCS wireless base stations, smart telephone sets, workstations, data terminals and computers. The device supports the 2B+D channel format (two 64 kbit/s B-channels and one 16 kbit/s D-channel) over two wires as recommended by the CCITT. The line data is converted to and from the ST- BUS format on the system side of the network to allow for easy interfacing with other components such as the S- interface device in an NT1 arrangement, or to digital PABX components. Smart telephone sets with data and voice capability can be easily implemented using the MT9173/74 as a line interface. The device’s high bandwidth and long loop length capability allows its use in a wide variety of sets. This can be extended to provide full data and voice capability to the private subscriber by the installation of equipment in both the home and central office or remote concentration equipment. Within the subscriber equipment the MT9173/74 would terminate the line and encode/ decode the data and voice for transmission while additional electronics could provide interfaces for a standard telephone set and any number of data ports supporting standard data rates for such things as computer communications and telemetry for remote meter reading. Digital workstations with a high degree of networking capability can be designed using the DNIC for the line interface, offering up to 160 kbit/s data transmission over existing telephone lines. The MT9173/74 could also be valuable within existing computer networks for connecting a large number of terminals to a computer or for intercomputer links. With the DNIC, this can be accomplished at up to 160 kbit/s at a very low cost per line for terminal to computer links and in many cases this bandwidth would be sufficient for computer to computer links. Figure 1 shows the block diagram of the MT9173/74. The DNIC provides a bidirectional interface between the DV (data/voice) port and a full duplex line operating at 80 or 160 kbit/s over a single pair of twisted wires. The DNIC has three serial ports. The DV port (DSTi/Di, DSTo/Do), the CD (control/data) port (CDSTi/CDi, CDSTo/CDo) and a line port (LIN, LOUT). The data on the line is made up of information from the DV and CD ports. The DNIC must combine information received from both the DV and CD ports and put it onto the line. At the same time, the data received from the line must be split into the various channels and directed to the proper ports. The usable data rates are 72 F0 C4 DSTi DSTo F0o B17 B16 B15 B14 B13 B12 B11 B10 B17 B17 Channel Time 0 B17 B16 B15 B14 B13 B12 B11 B10 B27 B26 B25 B24 B23 B22 B21 B20 B27 B26 B25 B24 B23 B22 B21 B20 Channel Time 16 |
Similar Part No. - MT9174 |
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Similar Description - MT9174 |
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