參數(shù)資料
型號： MT90820
廠商： Mitel Networks Corporation
英文描述： Large Digital Switch(大數(shù)字開關(guān))
中文描述： 大型數(shù)字交換（大數(shù)字開關(guān)）
文件頁數(shù)： 20/33頁
文件大?。?/td> 132K
代理商： MT90820
20
MT90820
CMOS
Wide Frame Pulse (WFP) Frame Alignment
Mode
When the device is the wide frame pulse mode, the
device can operate in the HMVIP and MVIP-90
environment if the input data streams are sampled at
3/4 bit time. When input data stream are sampled at
half-bit time as specified in the HMVIP and MVIP-90
standard, the device can only operate with data rate
of 2Mb/s. Refer to the ST-BUS output delay
parameter, t
SOD
, as specified in the AC Electrical
Characteristic table.
The MT90820 is designed to accept a common
frame pulse F0i, the 4.096MHz and 16.384MHz
clocks required by the HMVIP standards. To enable
the Width Frame Pulse Frame Alignment Mode, the
WFPS pin has to be set to HIGH and the DR1and
DR0 bits set for 8.192MB/s data rate operation.
Digital Access Cross-Connect System
Figure 7 illustrates how the MT90820 can be used to
construct, for example, a 256 E1/T1 digital access
cross-connect system (DACS). The system consists
of 32 trunk cards each having eight E1 or T1 trunk
interfaces for a total of 256 trunks. The central
switching block is constructed from 16 MT90820
devices.
Figure 8 shows how an 8,192 x 8,192 channel switch
can be constructed from 4,096 x 4,096 channel
switch modules. Figure 5 shows the implementation
of the 4,096 x 4,096 channel switch modules from
four MT90820 devices. Therefore, 16 MT90820
devices are required to realize an 8,192 x 8,192
non-blocking switch module with 64 input and 64
output streams. Each stream has 128 channels per
frame for a data rate of 8.192Mb/s.
Figure 9 shows an eight-stream trunk card block
diagram. The MT8986 Multi-rate Digital Switch are
used to concentrate the 32-channel 2.048Mb/s
ST-BUS (DSTi and DSTo) streams at each E1/T1
trunk onto four 128-channel 8.192Mb/s streams.
It will take 256 MT8986 devices to implement the
switching matrix of using 32-channel 2.048Mb/s
ST-BUS streams in a square (16 x 16) configuration.
A large saving in component cost and board area
can be achieved by using 128-channel 8.192Mb/s
streams. That is, the same capacity can be achieved
using 64 MT8986 devices + 16 MT90820 devices for
a total of 80 devices.
Figure 7 - 256 E1/T1 Digital Access Cross-Connect System (DACS)
8 x E1/T1
Trunk Card
E1
0
E1
7
Trunk Card (TC) 0
8 x E1/T1
Trunk Card
E1
8
TC1
E1
15
8 x E1/T1
Trunk Card
(Figure 10)
E1
247
TC31
E1
255
64 input streams
x
64 output streams
Sixteen MT90820
operate
in 8 Mb/s mode
8,192 x 8,192 channel
Switch Matrix
(Figure 9)
128 channels at 8.192Mb/s
相關(guān)PDF資料
PDF描述
MT90823 3V Large Digital Switch(3V 大數(shù)字開關(guān))
MT90826 Quad Digital Switch(四數(shù)字開關(guān))
MT90840 Distributed Hyperchannel Switch(分布式超級通道開關(guān))
MT90863AL1 3V Rate Conversion Digital Switch
MT90863 3V Rate Conversion Digital Switch(3V 速率轉(zhuǎn)換數(shù)字開關(guān))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT90820AL 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 2K X 2K/1K X 1K/512 X 512 131.072MBPS 5V 100MQFP - Trays
MT90820AL1 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 2K X 2K/1K X 1K/512 X 512 131.072MBPS 5V 100MQFP - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH 2048X2048 100MQFP 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH 2048X2048 100MQFP
MT90820AP 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Large Digital Switch
MT90820AP1 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Large Digital Switch
MT90820APR 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 2K X 2K/1K X 1K/512 X 512 5V 84PLCC - Tape and Reel
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