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參數(shù)資料
| 型號： | MT90826AL |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 路由/交換 |
| 英文描述： | Quad Digital Switch |
| 中文描述： | TELECOM, DIGITAL TIME SWITCH, PQFP160 |
| 封裝： | 28 X 28 MM, 3.40 MM HEIGHT, 0.65 MM PITCH, MS-022DD-1, MQFP-160 |
| 文件頁數(shù)： | 14/46頁 |
| 文件大?。?/td> | 571K |
| 代理商： | MT90826AL |
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MT90826
Data Sheet
14
Zarlink Semiconductor Inc.
2.0 Functional Description
A functional Block Diagram of the MT90826 is shown in Figure 1.
2.1 Data and Connection Memory
For all data rates, the received serial data is converted to parallel format by internal serial-to-parallel converters and
stored sequentially in the data memory. Depending upon the selected operation programmed in the control register,
the usable data memory may be as large as 4,096 bytes. The sequential addressing of the data memory is
performed by an internal counter, which is reset by the input 8 kHz frame pulse (F0i) to mark the frame boundaries
of the incoming serial data streams.
Data to be output on the serial streams may come from either the data memory or connection memory. Locations in
the connection memory are associated with particular ST-BUS output channels. When a channel is due to be
transmitted on an ST-BUS output, the data for this channel can be switched either from an ST-BUS input in
connection mode, or from the lower half of the connection memory in message mode. Data destined for a particular
channel on a serial output stream is read from the data memory or connection memory during the previous channel
timeslot. This allows enough time for memory access and parallel-to-serial conversion.
2.2 Connection and Message Modes
In the connection mode, the addresses of the input source data for all output channels are stored in the connection
memory. The connection memory is mapped in such a way that each location corresponds to an output channel on
the output streams. For details on the use of the source address data (CAB and SAB bits), see Table 14. Once the
source address bits are programmed by the microprocessor, the contents of the data memory at the selected
address are transferred to the parallel-to-serial converters and then onto an ST-BUS output stream.
By having several output channels connected to the same input source channel, data can be broadcast from one
input channel to several output channels.
In message mode, the microprocessor writes data to the connection memory locations corresponding to the output
stream and channel number. The lower half (8 least significant bits) of the connection memory content is
0
0
0
0
0
0
0
0
0
0
0
1
1
1
Input Offset Selection Register 5, DOS5
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Input Offset Selection Register 6, DOS6
0
0
0
0
0
0
0
0
0
0
1
0
0
1
Input Offset Selection Register 7, DOS7
0
0
0
0
0
0
0
0
0
0
1
0
1
0
Frame Output Offset Register, FOR0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
Frame Output Offset Register, FOR1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
Frame Output Offset Register, FOR2
0
0
0
0
0
0
0
0
0
0
1
1
0
1
Frame Output Offset Register, FOR3
0
0
0
0
0
0
0
0
0
0
1
1
1
0
Unused
0
0
0
0
0
0
0
0
0
0
1
1
1
1
Unused
0
0
0
0
0
0
0
0
0
1
0
0
0
0
Unused
0
0
0
0
0
0
0
0
0
1
0
0
0
1
Bit Error Input Selection Register, BISR
0
0
0
0
0
0
0
0
0
1
0
0
1
0
Bit Error Count Register, BECR
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Location
Table 3 - Address Map for Registers (A13 = 0) (continued)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT90826AL1 | Quad Digital Switch |
| MT90826AV | Quad Digital Switch |
| MT90840AL | Distributed Hyperchannel Switch |
| MT90866AG2 | Flexible 4 K x 2.4 K Channel Digital Switch with H.110 Interface and 2.4 K x 2.4 K Local Switch |
| MT90869 | Flexible 16K Digital Switch (F16kDX) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT90826AL1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 4K X 4K/2K X 2K/1K X 1K 3.3V 160MQFP - Trays 制造商:Microsemi Corporation 功能描述:PB FREE QUAD DIGITAL SWITCH |
| MT90826AV | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 4K X 4K/2K X 2K/1K X 1K 3.3V 144LBGA - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH QDX QUAD 144LBGA 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH QDX QUAD 144LBGA |
| MT90840 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Distributed Hyperchannel Switch |
| MT90840AK | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Distributed Hyperchannel Switch |
| MT90840AL | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 512 X 2430/512 X 512/2.373K X 2.373K 5V 100MQFP - Trays |
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