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參數資料
| 型號： | MT90870 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Flexible 12 k Digital Switch (F12kDX) |
| 中文描述： | 靈活的12畝數字交換機（F12kDX） |
| 文件頁數： | 48/86頁 |
| 文件大?。?/td> | 2093K |
| 代理商： | MT90870 |
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MT90870
Data Sheet
48
Zarlink Semiconductor Inc.
12.0 Memory Address Mappings
The device contains two data memory blocks, one for received Backplane data and one for received Local data. For
all data rates the received data is converted to parallel format by internal serial to parallel converters and stored
sequentially in the relevant data memory.
12.1 Backplane Data Memory Bit Definition
The 8-bit Backplane Data Memory (BDM) has 8,192 positions. The locations are associated with the Backplane
input streams and channels. The address bits (A13:0) of the microprocessor define the addresses of the streams
and the channels. The BDM is configured as follows:
12.2 Local Data Memory Bit Definition
The 8-bit Local Data Memory (LDM) has 4,096 positions. The locations are associated with the Local input streams
and channels. The address bits of the microprocessor define the addresses of the streams and the channels. The
LDM is configured as follows:
Table 10 - Local Data Memory (LDM) Bits
Address Bit
Description
A14
Selects memory or register access
A13-A9
Stream address (0-31)
A8-A0
Channel address (0-511)
Notes:
1. Bit A14 must be high for accessing to data and connection memory positions. Bit A14 must
be low for accessing registers.
2. Streams 0 to 15 are used when the Backplane serial streams are at 32.768 Mb/s.
3. Channels 0 to 31 are used when serial stream is at 2.048 Mb/s.
4. Channels 0 to 63 are used when serial stream is at 4.096 Mb/s.
5. Channels 0 to 127 are used when serial stream is at 8.192 Mb/s.
6. Channels 0 to 255 are used when serial stream is at 16.384 Mb/s.
7. Channels 0 to 511 are used when serial stream is at 32.768 Mb/s.
Table 8 - Address Map for Data and Connection Memory Locations (A14=1)
Bit
Name
Description
15-8
Reserved
Set to a default value of 0
7-0
BDM
Backplane Data Memory
Backplane Input Channel Data
Table 9 - Backplane Data Memory (BDM) Bits
Bit
Name
Description
15-8
Reserved
Set to a default value of 0
7-0
LDM
Local Data Memory
Local Input Channel Data
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MT90870AG | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 12K X 12K/8K X 4K 1.8V/3.3V 272BGA - Trays |
| MT90870AG2 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 12K X 12K/8K X 4K 1.8V/3.3V 272BGA - Trays |
| MT90871 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Flexible 8K Digital Switch (F8KDX) |
| MT90871AV | 制造商:Microsemi Corporation 功能描述:FLEXIBLE 8K DIGITAL SWITCH 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH F8KDX 196PBGA 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH F8KDX 196PBGA |
| MT90871AV2 | 制造商:Microsemi Corporation 功能描述:PB FREE FLEXIBLE 8K DIGITAL SWITCH - Bulk 制造商:Microsemi Corporation 功能描述:IC, TDM SWITCH 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH F8KDX 196PBGA 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH F8KDX 196PBGA |
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