Mitel MT90840 Frame Sync with Positive Polarity Spfp =, Frame Sync with Negative Polarity Spfp =

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MT90840

 

 

Preliminary Information

 

tclk

 

tt

tclkh

tclkl

 

C4/8R1**

 

 

 

(8.192 MHz

 

 

 

reference)

tsod

 

 

 

 

 

STo0-7

bit 0, ch.127

bit 7, ch. 0

bit 6, ch. 0

 

 

tstis

tstih

 

STi0-7

 

bit 7

 

 

 

 

 

tdf

tdf

 

F0o output

 

 

 

(8 kHz)

 

 

 

C4/8R1** (8.192 MHz

reference)

STo0-7

STi0-7

F0o output (8 kHz)

Frame Sync with Positive Polarity (SPFP = 1)

tclk

tt

 

 

tclkh

tclkl

 

 

 

 

 

 

 

 

 

 

 

 

tsod

 

 

bit 0, ch.127

bit 7, ch. 0

bit 6, ch. 0

tstis

tstih

 

 

bit 7

 

tdf

tdf

 

 

 

Frame Sync with Negative Polarity (SPFP = 0)

**In TM2 and TM3 operation at 8.192 Mbps, the F0 output signal is clocked by the C4/8R1 input reference provided by the user. (In 8.192 Mbps applications, the SPCKo output signal is not used.)

Figure 24 - Serial Port Timing for 8.192 Mbps - Timing Modes 2 and 3

2-270

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Contents Features ApplicationsPIN Plcc Pin ConnectionsPin Description Pin #Description 100 No ConnectionPckt PckrTDI +5 Volt Power Supply GroundFunctional Description Time Slot Interchange Operation SwitchingDevice Operation C4/8R1&2 4 MHz Serial I/O 2 Mbps Serial I/O 4 Mbps C4/8R1&2 8 MHz Serial I/O 8 MbpsPPFRi PDi0-7 Pckr or Pckt TCP bit = PPFTi/o Ppfp bit =1 PDo0-7Transmit Path Bypass/Parallel-Switching PathReceive Path Serial Data Port Serial Frame Pulse Parallel Port Clock Signals and FramingParallel Data Port Timing and Switching Control Output Driver Enable Control CapabilityTiming Mode 1 TM1 Ring Master Asynchronous Parallel Port With ST-BUS Clock 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 MT90840 Throughput Delay MT90840 Per-channel FunctionsPer-channel Bypass on the Parallel Port Per-channel Control Outputs on the Parallel PortMode Data Rates Minimum Delay Total Throughput Delay MT90840 Throughput Delay SummaryPer-channel Message Mode Serial and Parallel STi0 STo0Per-channel Tri-state Serial and Parallel Per-channel Direction Control on the Serial PortSerial Data Memory Addressing Addressing2.048 Mbps Add/Drop Mode Tpdm Addressing Microprocessor Port Address Mapping of the Internal RegistersIRQ Interrupt Pin DTA Data Transfer Acknowledgment PinHex Accessing Internal MemoriesMT90840 Register Address Mapping Clock Quality and TM1 Tpcm Access Integrity Clock Quality and TM2 Rpcm Access IntegrityDetecting Clock Presence Memory Block-ProgrammingTiming Mode Initialization Jtag SupportTest Access Port TAP Boundary-Scan Instruction RegisterI01 Instruction Description Boundary-Scan Instruction RegisterTest Data Registers Cells DefinitionBoundary-Scan Register Cells Definitions HighInterface Mode Selection Register IMS READ/WRITE Timing Mode Register TIM READ/WRITERegister Description DR1General Purpose Mode Register GPM READ/WRITE Alarm Status Register ALS READ/WRITEPhase Status Registers PSD Read Only Control Register CR READ/WRITEInternal Memory Description AB9 AB8AB11 AB10 Distributed Isochronous Network CTI Distributed Architecture Implemented with the MT90840Parameter Symbol Min Max Units Characteristics Sym Min Typ Max Units Test ConditionsCharacteristics Sym Min Typ‡ Max Units Test Conditions/Pins Absolute Maximum RatingsCharacteristics Sym Min Typ‡ Max Units Test Conditions TM1Units Test Conditions Characteristics Sym Min Typ‡Output Pin Test Point Serial Port with Negative Polarity F0 ST-BUS Serial Port with Positive Polarity F0 GCISerial Port Timing for 2.048 Mbps TM2 SFDi = 0 and TM3 267 F0 Frame Sync with Negative Polarity Spfp = F0 Frame Sync with Positive Polarity Spfp =Serial Port Timing for 8.192 Mbps TM1 and TM2 SFDi = Frame Sync with Positive Polarity Spfp = Frame Sync with Negative Polarity Spfp =Timing for the Parallel Port External Control Lines CTo0-3 AC Electrical Characteristics Parallel Data Port Parallel Port Receive TimingParallel Port in Timing Mode RD/WR 774 Up to 3 C4 cycles + Register takd-wrIntel/National Multiplexed Bus Timing AD0AC Electrical Characteristics† Motorola Multiplexed Bus Mode Characteristics Sym MinAD0-7 AD0-13Parameter Symbol Min Max Units Test Conditions Boundary Scan Test Port TimingDim 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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