- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383645 > MT90812 (Mitel Networks Corporation) Integrated Digital Switch (IDX)(集成數(shù)字開關(guān)) PDF資料下載
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)字開關(guān)) |
| 中文描述： | 綜合數(shù)字交換機(jī)（IDX的）（集成數(shù)字開關(guān)） |
| 文件頁數(shù)： | 14/105頁 |
| 文件大?。?/td> | 334K |
| 代理商： | MT90812 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當(dāng)前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁
MT90812
Advance Information
10
4.0
Switching
The switching function of the MT90812 is described in four parts:
How incoming data from the Local TDM streams are transferred to Data Memory.
How incoming data from the Expansion Bus is transferred to Data Memory for both IDX Link and TDM
Link modes.
Connect Memory and Data Memory structure.
How output data can be switched from either Data Memory or Connect Memory.
Each will be described below with reference to Figure 1 - “Functional Block Diagram”. This is followed by a
more detailed description of Connect Memory in Section 4.2.
4.1
Switching Functions
4.1.1
The serial data incoming to the MT90812 is converted into parallel format (8 bits per channel) with the parallel
to serial converters for both the Local and Expansion Bus streams. This data is written to consecutive locations
in Data Memory.
Data Transfer from Local TDM Streams to Data Memory
The two local TDM streams, STi/o0 and STi/o1, operate at 2.048 Mb/s for a total of 64 channels per frame. The
64 bytes are stored in the Local Data Memory page in locations 00
H
to 3F
H
. Refer to the Memory Map in
Table 2.
4.1.2
In TDM Link mode, the expansion bus rate can be set to 2.048, 4.096 or 8.192 Mb/s, where the number of
channels used for the expansion bus stream are 32, 64 and 128, respectively. In Data Memory, 128 bytes are
reserved in the Expansion Data Memory page. If there are only 32 or 64 channels (i.e. at 2.048 or 4.096 Mb/s)
then the first 32 or 64 locations of the 128 reserved for the expansion bus are used.
Data Transfer from the Expansion Bus to Data Memory
In IDX Link mode, the Expansion Bus rate is set to 8.192 Mb/s. There are 96 channels incoming from EST0
and 32 channels from ESTI, for a total of 128 incoming channels read into Expansion Data Memory.
4.1.3
There are 64 locations in Local Data Memory reserved for the incoming channels of the Local TDM streams
and 128 locations in Expansion Data Memory, for the incoming channels of the Expansion Bus. In addition,
there are another 32 locations of Local Data Memory reserved for the Tone generator. Refer to the Memory
Map in Table 2.
Connect Memory and Data Memory Structure
For each output channel there is an associated Connect Memory location. There are 128 locations for the
outgoing expansion bus channels and 64 for the local TDM streams.
4.1.4
When the MT90812 switches data from input channels to outgoing channels, the address for Data Memory is
read from the Connection Memory location corresponding to the desired output channel. In Message Mode,
output data is read directly from the Connection Memory location corresponding to the output channel. The
details for setting up the connections are given in the following section.
Switching Output Data from Either Data Memory or Connect Memory
4.2
Connection Memory
The use of Connection Memory in the MT90812 is described in three parts:
Connection Memory usage for Switch Connection or Message Mode
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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。