MT8985AP Mitel, MT8985AP Datasheet
MT8985AP
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MT8985AP Summary of contents
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... Converter STi5 STi6 STi7 CMOS ST-BUS MT8985AC MT8985AE MT8985AP MT8985AL Description The MT8985 Enhanced Digital Switch device is an upgraded version of the popular MT8980D Digital Switch (DX pin compatible with the MT8980D and retains all of the MT8980D's functionality. This VLSI device is designed for switching PCM-encoded ...
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MT8985 STi3 7 STi4 8 9 STi5 10 STi6 11 STi7 12 VDD 13 F0i 14 C4i 1819 ...
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... By using Mitel Message mode capability, the microprocessor can access input and output time slots on a per channel basis to control devices such as the MITEL MT8972, ISDN Transceivers and T1/ CEPT trunk interfaces through the ST-BUS interface. Different digital backplanes can be accepted by the MT8985 device without user's intervention. The ...
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MT8985 time slot interchange functions throughput delay capabilities on a per-channel basis. For voice applications, the variable delay mode can be selected ensuring minimum throughput delay between input and output data. In multiple or grouped channel data applications, the constant ...
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... Where: Microprocessor Port The MT8985 compatibility with Mitel MT8980 Digital Switch device providing a non-multiplexed bus architecture. The parallel port consists bit parallel data bus (D0-D7), six address input lines (A0-A5) and four control lines (CS, DS, R/W and DTA). This parallel ...
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MT8985 LOW, then the MT8985 Internal Control Register is addressed (see Figure 3 input line is HIGH, then the remaining address input lines are used to select Memory subsections corresponding to the number of channels per input or ...
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HIGH. If CSTo bit is LOW, the corresponding bit on the CSTo output is transmitted in LOW. The contents of the 256 CSTo bits of the CMH are transmitted sequentially on to the CSTo output pin and are ...
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MT8985 During the microprocessor initialization routine, the microprocessor should program the desired active paths through the matrices, and put channels into the high impedance state. Care should be taken that no two connected ST-BUS outputs drive the bus simultaneously. When ...
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... Another application of the MT8985 in an MVIP environment is to build an ISDN S-interface card (Figure 11). In this card, 7 pairs of ST-BUS streams are connected to the MVIP interface while the remaining pair is reserved for the interconnection of MITEL MT8930 (SNIC), MT8992 (H-PHONE) and the MVIP interface. MT8985 AAAA AA ...
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... SWITCH MODULE) • • • MH89760B/790B MH89760B/790B • MH89760B/790B • • Local T1/E1 Link MT8972B ST-BUS MH89760B MH89790B ANALOG MT8985s (x4) Server 2 MVIP BUS Figure 8b - Implementation of an Isochronous Network Using Mitel Components 2- ISDN A A S-Interface ...
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Input Streams From MVIP 8 Input On-Board ST-BUS Streams Figure 9 - 512-Channel Switch Array MVIP STo0-7 FDL HDLC MT8952B SWITCH MT8985 T1/E1 MH89760B SWITCH MT8985 or MH89790B HDLC MT8952B ANALOG D-PHONE MT8992/93 Figure 10 - Dual T1/E1 Card ...
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MT8985 S INTERFACE HDLC MT8930B DIGITAL PHONE HDLC MT8992/93 Figure 11 - S-Access Card Functional Block Diagram 2-56 MVIP HEADER MVIP STo1-7 MVIP STi1-7 STi7-1 SWITCH MATRIX MT8985 STi0 STo0 DPLL MT8941 PC INTERFACE STo7-1 DTMF RECEIVER MT8870 ...
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Absolute Maximum Ratings* Parameter Voltage on Digital Inputs 3 Voltage on Digital Outputs 4 Current at Digital Outputs 5 Storage Temperature 6 Package Power Dissipation * Exceeding these values may cause permanent damage. ...
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MT8985 AC Electrical Characteristics Voltages are with respect to ground (VSS) unless otherwise stated. Characteristics 1 Frame Pulse width 2 Frame Pulse setup time 3 Frame Pulse hold time 4 STo delay Active to Active 5 STi setup time 6 ...
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AC Electrical Characteristics Voltages are with respect to ground (VSS) unless otherwise stated. Characteristics 1 Clock Period 2 Pulse Width 3 Frame Width High 4 Frame Setup 5 Frame Hold 6 Data Delay/Clock Active to Active 7 Serial Input Setup ...
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MT8985 AC Electrical Characteristics Characteristics 1 O STo0/7 Delay - Active to High STo0/7 Delay - High Z to Active Output Driver Enable Delay CSTo Output Delay S † Timing is ...
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AC Electrical Characteristics Voltages are with respect to ground (VSS) unless otherwise stated . Characteristics 1 CS Setup from DS rising 2 R/W Setup from DS rising 3 Add setup from DS rising 4 CS hold after DS falling 5 ...
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MT8985 Notes: 2-62 ...