參數(shù)資料
型號： MT90820AL1
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 路由/交換
英文描述： Large Digital Switch
中文描述： TELECOM, DIGITAL TIME SWITCH, PQFP100
封裝： 14 X 20 MM, 2.80 MM HEIGHT, LEAD FREE, MO-112CC-1, MQFP-100
文件頁數(shù)： 24/37頁
文件大小： 573K
代理商： MT90820AL1
MT90820
Data Sheet
24
Zarlink Semiconductor Inc.
The MT90820 is designed to accept a common frame pulse F0i, the 4.096 MHz and 16.384 MHz 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 8.192 MB/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 8.192 Mb/s.
Figure 9 shows an eight-stream trunk card block diagram. The MT8986 Multi-rate Digital Switch are used to
concentrate the 32-channel 2.048 Mb/s ST-BUS (DSTi and DSTo) streams at each E1/T1 trunk onto four 128-
channel 8.192 Mb/s streams.
It will take 256 MT8986 devices to implement the switching matrix of using 32-channel 2.048 Mb/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 8.192 Mb/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
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 8.192 Mb/s
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
MT90820APR1 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Large Digital Switch
MT90823 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:3V Large Digital Switch
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