MT8982 Mitel Networks Corporation, MT8982 Datasheet
MT8982
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MT8982 Summary of contents
Page 1
... Pin SOIC MT8982AN 20 Pin SSOP -40 to +85 C Description The MT8982 Small Digital Switch (MiniDX non- blocking CMOS time switch with a capacity bit Time Division Multiplexed (TDM) encoded voice or data channels size-optimized version of MITEL's successful MT8980D Digital Switches, ...
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... MT8982 ISO-CMOS 1 STi0 2 STi1 STo0 3 4 STo1 5 RxD/CSTi0 6 TxD/NC 7 SCLK/CSTi1 8 VSS 16 PIN CERDIP/PLASTIC/SOIC Pin Description www.DataSheet4U.com Pin # Name 16 20 1-2 1-2 STi0- Serial TDM Input 0 and 1 (Inputs). 2048 kbit/s input data streams containing 32 8-bit STi1 channels synchronized to F0i. 3-4 4-5 STo0- Serial TDM Output 0 and 1 (Outputs). 2048 kbit/s output data streams containing 32 STo1 8-bit channels synchronized to F0i ...
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... The TDM ISO-CMOS formatted frame pulse is active high at the beginning of timeslot 5 (relative to the MT8982) and idles low. The MT8982 automatically determines the type of frame pulse from the level of the idle over five clock periods. A ST-BUS formatted frame pulse resets the internal address counters to zero. A GCI formatted frame pulse resets the counters to fi ...
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... Subsequent write microcycles may flow without raising CS. CS must go high after a read microcycle. 2-34 Microcontroller Interface The MT8982 is controlled via a synchronous, serial microport. The microport is compatible with Intel's MCS-51 serial port Mode 0 specifications, Motorola's Serial Peripheral Interface (SPI) specifications, and National's MicroWire specifi ...
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... Channel 0-4. These bits are the five least significant bits of the address for the memory location that accessed. The binary value of these bits correspond to a TDM channel (0-31). Command Select 0-1. These two bits define the four command operations for the MT8982. The destination addressed by the command is defined in bits 2-7 of the Command/Address byte. Cmd0-Cmd1 0-0 Read from Connect Memory ...
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... Connect Memory write mode was, the data transmitted could be a message byte or a Connection Mode data byte. Bit 5 Bit 6 Bit Link 1 Link Link microport mode, the MT8982 These bits operations selected by is the ...
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... Connect configured in connection mode. The Connection Mode Data Byte (Table 2) will be received by the MT8982 in the following data byte. Bits (SC0-SC4) select the source input channel for switching to this output channel. selects the input stream. Bit 6 (ODE) enables/ disables tristate for this channel. Bit 7 is unused in connection mode ...
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... MT8982's through their CSTi pins. A microcontroller in each remote switch would not be required. Primary Rate Serial Controller Figure 7 shows the MT8982 used in a primary rate serial control application. The MT8982 is used as the control interface from a microcontroller to MITEL’s MH89760/790 T1 Primary Rate Interfaces using the microcontroller’ ...
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... Subscriber Interface 0 STi0 STo1 CSTi0 • • CSTi1 Subscriber Interface 32 Small Remote Switch 1 • • • MT8982 MiniDx STi0 STi1 Subscriber STo0 Interface 0 STo1 CSTi0 • • CSTi1 Subscriber Interface 32 Small Remote Switch n MH89760/790 T1 Trunk DSTi DSTo CSTi0 CSTi1 CSTo MT8982 2-39 ...
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... ISO-CMOS PCM Streams GCI CLK (4.096 MHz) GCI Frame Pulse www.DataSheet4U.com MT8982. Therefore, to connect GCI channel B1 to ST-BUS channel B1, the programmed to connect channel 5 to channel 2. The five channel offset ensures that all four basic rate channels will be switched together within one frame period, regardless which direction the data is being switched ...
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... Serial Microport (see Figure 12) Sym Min Typ daz t 190 ppwh t 190 ppwl t 2 cdbd , with timing corrected to cancel time taken to discharge C L MT8982 ISO-CMOS Symbol Min Max -0 100 O T -65 +150 S P 1000 D ) unless otherwise stated ...
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... MT8982 ISO-CMOS ppwh SCLK www.DataSheet4U.com RxD bit 0 TxD F0i (ST-BUS F0i (GCI) C4i t sdaa DSTo0-1 DSTi0-1 CSTi0-1 2-42 t cdbd t ppwl bit Figure 12 - Serial Microport Timing 10 cycles of C4i t sdaz Figure 13 - TDM Bus Timing t t daz ...
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... Figure 14a - TDM Bus Timing - F0o/Clock Timing ODE STo0-1 t saz Figure 14b - ODE Timing MT8982 ISO-CMOS Voltages are with Max Units Test Conditions ns 4 meg mode ns 5 cycles 100 ns C =50pF ...
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... MT8982 ISO-CMOS NOTES: www.DataSheet4U.com 2-44 ...