參數(shù)資料
型號(hào)： MT90812
廠商： Mitel Networks Corporation
英文描述： Integrated Digital Switch (IDX)(集成數(shù)字開(kāi)關(guān))
中文描述： 綜合數(shù)字交換機(jī)（IDX的）（集成數(shù)字開(kāi)關(guān)）
文件頁(yè)數(shù)： 12/105頁(yè)
文件大?。?/td> 334K
代理商： MT90812
MT90812
Advance Information
8
multiplexed bus specifications. The MT90812 can operate in either
Α
-Law or
μ
Law as defined in Control
register as specified in section “Control Register (CTL)” on page 54.
2.0
Local TDM Streams
There are two local serial Time Division Multiplexed (TDM) streams. These streams at STi/o0 and STi/o1
provide a link between the MT90812 and other peripheral devices, including those in the ST-BUS family (e.g.
MT9160B, MT9171/72, MT8930, MT8910). The two serial streams operate at 2.048 Mbit/s and are arranged in
125us wide frames, each comprising 32 8-bit channels. Refer to Section 9.2, “Serial Data Interface Timing”.
The MT90812 can support Primary Rate or Basic Rate devices. Using the Basic Rate devices (e.g. MT9171/72
DNIC) in dual port mode the D-Channel should be assigned to STi/o1 streams. D-channel signalling support is
provided for any timeslot on the STi/o1 streams for the HDLC Controller mode. The DBRT can access any
timeslot and stream. Refer to “D-Channel Signalling Support” on page 30 and “Local TDM Channel
Assignment” on page 76.
3.0
Expansion Bus
The expansion bus operates in 2 modes, IDX Link and TDM Link modes. The modes will be described in the
following sections. Section 24.1 describes the timing references used for both Expansion bus modes.
3.1
TDM Link Mode
In this mode, the expansion bus at EST0 and EST1, are regular output and input serial streams, respectively.
They operate at either 2.048, 4.096 or 8.192 Mbit/s. Refer to Fig. 4.
Figure 4 - Expansion Bus (TDM Link mode)
At 2.048Mb/s, the first block of 32 locations of Data Memory reserved for the expansion bus are used. The 32
incoming channels on EST1 are placed in expansion block 1 of Data Memory. At 4.096 Mb/s the 64 bytes are
utilized in expansion block 1 and 2. At 8.192Mb/s all 128 locations of Data Memory reserved for the expansion
bus are used. Refer to the description of the memory allocation in Section 5, “Address Memory Map”.
This mode allows linking larger matrices of MT90812 devices together. For example, at 2.048 Mb/s, eight
MT90812 devices can be connected together via a MT8980D (DX) switch, as shown in Fig. 5.
Figure 5 - Eight IDX Configuration using Expansion Bus TDM Link mode
F0i
channel
STi/o1
i+32
frame n
i
. . .
EST0/1
. . .
A1
A2
E1
E2
E3
E4
E5
E6
E7
E8
E128
TRUNKS
AND PORTS
IDXa
uport
STi/o0-1
TRUNKS
AND PORTS
IDXb
uport
STi/o0-1
EST0
TRUNKS
AND PORTS
IDXh
uport
STi/o0-1
EST1
EST1
DX
MPU
uport
相關(guān)PDF資料
PDF描述
MT90840AK Distributed Hyperchannel Switch
MT90840AP Distributed Hyperchannel Switch
MT9085B PAC - Parallel Access Circuit(并行存取電路)
MT9092 Digital Telephone with HDLC(數(shù)字電話（帶高階數(shù)據(jù)鏈路控制HDLC）)
MT9092 ISO2-CMOS ST-BUS⑩ FAMILY Digital Telephone with HDLC (HPhone-II)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT90812AL 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays
MT90812AL1 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays 制造商:Microsemi Corporation 功能描述:PB FREE INTEGRATED DIGITAL SWITCH
MT90812AP 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated Digital Switch (IDX)
MT90812AP1 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 68PLCC /BAKE/DRYPACK - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:INTEGRATED DIGITAL SWCH
MT90812APR 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192/64 X 64 1.048GBPS 5V 68PLCC - Tape and Reel
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