Mitel MT90840 manual Distributed Isochronous Network

Page 31

Preliminary Information

MT90840

Applications

Distributed Isochronous Network

Low latency isochronous backbones provide for the deployment of systems that require cost effective implementation, high bandwidth, predictable data transfer delays and direct synchronization with the wide area network.

Some applications in Computer Telephony Integration (CTI) require a large amount of bandwidth to be transported between multiple chassis within the same location, or between separate locations. The MT90840 is ideal for implementing physically distributed transport and switching systems for multi-chassis or inter-shelf communications.

The MT90840 bridges existing Mitel ST-BUS components into a new networking environment where mixed data, voice and video signals can be time-interchanged or multiplexed from serial PCM streams onto serial high-speed time-division- multiplex (TDM) isochronous backbones operating at

SONET rates such as 51 (STS-1) or 155 Mbps (STS-3).

Today, transmission links operating at SONET rates utilize serial-to-parallel and parallel-to-serial converters (or framers) which perform embedded framing functions and give the user access to the payload of the high speed frame. The MT90840 provides an 8-bit bidirectional parallel data port which directly interfaces to a high-speed framer parallel data interface, allowing designers to build distributed networking systems with interconnection speeds up to 155 Mbps. Figure 16 shows an example of a distributed networking application in a CTI system.

The MT90840's clock synchronization and reference options allow many applications and topologies when isochronous TDM backbones are required. Two major clock synchronization schemes provided by the MT90840 allow the serial port interface (ST-BUS) to provide the master clock and frame reference signals for the distributed high speed backbone (master operation) or to derive the entire ST-BUS clock and frame reference signals from the high speed backbone (slave operation). This type of

CTI Server

 

 

 

24/30B+D

 

 

 

 

 

 

ST-BUSMT8977/9079

PSTN

 

 

 

Switching

MT90810

 

T1 & E1 I/F

 

FMIC

 

 

CTI

BUS

 

Call

 

 

e.g.; MVIP

 

 

Processing

SERVER

 

 

 

 

 

 

155 Mbps

 

 

MT90840

 

Framing &

 

 

 

Optics

Up to 2400 TDM

 

 

 

 

 

 

 

channels of user data

 

ST-BUS

MT896x

 

 

Filter/Codec

 

 

MT90810

 

 

 

FMIC

 

Filter/Codec

 

 

 

 

 

 

ST-BUS

MT8930 / 71

 

 

MT8985/6

 

(2B+D) I/F

 

 

EDX

ISO Ethernet

 

 

 

CTI

 

 

 

MUX

 

 

 

 

SERVER

 

LAN ADAPTER CARD

 

 

Interchassis Signalling

 

 

 

 

(e.g. Mitel’s Connection

 

 

 

 

Master Software)

Figure 16 - CTI Distributed Architecture Implemented with the MT90840

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Contents Applications FeaturesPin Connections PIN PlccNo Connection Pin DescriptionPin # Description 100Pckt PckrTDI Ground +5 Volt Power SupplyFunctional Description Time Slot Interchange Operation SwitchingDevice Operation Pckr or Pckt TCP bit = PPFTi/o Ppfp bit =1 PDo0-7 C4/8R1&2 4 MHz Serial I/O 2 MbpsSerial I/O 4 Mbps C4/8R1&2 8 MHz Serial I/O 8 Mbps PPFRi PDi0-7Transmit Path Bypass/Parallel-Switching PathReceive Path Serial Data Port Serial Frame Pulse Parallel Port Clock Signals and FramingParallel Data Port Asynchronous Parallel Port With ST-BUS Clock Master Timing and Switching ControlOutput Driver Enable Control Capability Timing Mode 1 TM1 Ring MasterTM1 Multiple-MT90840 Sub-Mode Pfdi Timing Mode 2 TM2 Ring SlaveAsynchronous Parallel Port With ST-BUS Clock Slave Internal 4.096 MHz Clock Divider External PLL and C4 Phase-CorrectionTM2 Multiple-MT90840 Sub-Mode Sfdi Sfdi = Synchronous Parallel Port With ST-BUS Clock SlaveSfdi = MT90840 Per-channel Control Outputs on the Parallel Port MT90840 Throughput DelayMT90840 Per-channel Functions Per-channel Bypass on the Parallel PortMT90840 Throughput Delay Summary Mode Data Rates Minimum Delay Total Throughput DelayPer-channel Direction Control on the Serial Port Per-channel Message Mode Serial and ParallelSTi0 STo0 Per-channel Tri-state Serial and ParallelAddressing Serial Data Memory Addressing2.048 Mbps Add/Drop Mode Tpdm Addressing DTA Data Transfer Acknowledgment Pin Microprocessor PortAddress Mapping of the Internal Registers IRQ Interrupt PinHex Accessing Internal MemoriesMT90840 Register Address Mapping Memory Block-Programming Clock Quality and TM1 Tpcm Access IntegrityClock Quality and TM2 Rpcm Access Integrity Detecting Clock PresenceJtag Support Timing Mode InitializationBoundary-Scan Instruction Register Test Access Port TAPBoundary-Scan Instruction Register I01 Instruction DescriptionHigh Test Data RegistersCells Definition Boundary-Scan Register Cells DefinitionsDR1 Interface Mode Selection Register IMS READ/WRITETiming Mode Register TIM READ/WRITE Register DescriptionAlarm Status Register ALS READ/WRITE General Purpose Mode Register GPM READ/WRITEControl Register CR READ/WRITE Phase Status Registers PSD Read OnlyAB9 AB8 Internal Memory DescriptionAB11 AB10 CTI Distributed Architecture Implemented with the MT90840 Distributed Isochronous NetworkAbsolute Maximum Ratings Parameter Symbol Min Max UnitsCharacteristics Sym Min Typ Max Units Test Conditions Characteristics Sym Min Typ‡ Max Units Test Conditions/PinsTM1 Characteristics Sym Min Typ‡ Max Units Test ConditionsUnits Test Conditions Characteristics Sym Min Typ‡Output Pin Test Point Serial Port with Positive Polarity F0 GCI Serial Port with Negative Polarity F0 ST-BUSSerial Port Timing for 2.048 Mbps TM2 SFDi = 0 and TM3 267 F0 Frame Sync with Positive Polarity Spfp = F0 Frame Sync with Negative Polarity Spfp =Serial Port Timing for 8.192 Mbps TM1 and TM2 SFDi = Frame Sync with Negative Polarity Spfp = Frame Sync with Positive Polarity Spfp =Timing for the Parallel Port External Control Lines CTo0-3 Parallel Port Receive Timing AC Electrical Characteristics Parallel Data PortParallel Port in Timing Mode 774 Up to 3 C4 cycles + Register takd-wr RD/WRAD0 Intel/National Multiplexed Bus TimingCharacteristics Sym Min AC Electrical Characteristics† Motorola Multiplexed Bus ModeAD0-13 AD0-7Boundary Scan Test Port Timing Parameter Symbol Min Max Units Test ConditionsDim Min Max Dimensions in inches are not exactNot to scale 280

MT90840 specifications

The Mitel MT90840 is an advanced telecommunications device designed to enhance connectivity and communication capabilities for various applications. With its robust array of features and technologies, the MT90840 is well-suited for businesses looking to improve their communications infrastructure.

One of the standout features of the Mitel MT90840 is its integration of voice and data services. This allows users to manage their communications more efficiently, streamlining operations and reducing costs. The device supports a wide range of voice codecs, ensuring high-quality audio during calls and providing flexibility for users who may require different standards for different applications.

Another key characteristic of the MT90840 is its scalability. The device is designed to grow with the needs of a business. It supports multiple lines and can be configured to handle an increasing number of users without compromising performance. This scalability is particularly advantageous for organizations that may undergo growth or changes in their communication needs over time.

The Mitel MT90840 also incorporates advanced networking technologies, such as VoIP (Voice over Internet Protocol). This allows users to make voice calls using the internet rather than traditional phone lines, reducing costs for long-distance calls and improving overall communication efficiency. The device is equipped with features that support secure, encrypted communication, further protecting sensitive data and conversations from potential breaches.

Additionally, the MT90840 is designed with user-friendliness in mind. It features an intuitive interface that simplifies operation, making it accessible even for those who may not be tech-savvy. The device is compatible with various peripherals, such as headsets and conferencing equipment, further enhancing its usability in diverse settings, from small offices to large conference rooms.

Moreover, the Mitel MT90840 offers excellent interoperability with a variety of third-party applications. This flexibility enables organizations to integrate the device into their existing systems seamlessly, thereby enhancing productivity without requiring a complete technological overhaul.

In conclusion, the Mitel MT90840 stands out as a versatile and reliable telecommunications solution. Its rich feature set, including voice and data integration, scalability, VoIP capabilities, user-friendly interface, and interoperability, makes it an ideal choice for businesses looking to elevate their communications strategy.
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