參數(shù)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(shù)字交換機（F12kDX）
文件頁數(shù)： 49/86頁
文件大小： 2093K
代理商： MT90870
MT90870
Data Sheet
49
Zarlink Semiconductor Inc.
12.3 Local Connection Memory Bit Definition
The Local Connection Memory (LCM) has 4,096 addresses of 16-bit words. Each address, accessed through bits
A13-A0 of the microprocessor port, is allocated to an individual Local output stream and channel. The bit definition
for each 16-bit word is presented in Table 11 for Local-to-Local and Backplane (Non-32 MB/s Mode)-to-Local
connections, and in Table 12, for Local-to-Local and Backplane(32 Mb/s Mode)-to-Local connections. Bit LSRC
selects the switch configuration for Backplane-to-Local or Local-to-Local. When the per-channel Message Mode is
selected (LMM = HIGH), the lower byte of the LCM word (LCAB7-0) will be transmitted as data on the output
stream (LSTo0-15) in place of data defined by the Source Control, Stream and Channel Address bits.
.
Bit
Name
Description
15
LSRC
Source Control Bit
When LOW, the source is from the Backplane input port (Backplane Data Memory).
When HIGH, the source is from the Local input port (Local Data Memory).
Ignored when LMM is set HIGH.
14
LMM
Local Message Mode Bit
When LOW, the channel is in Connection Mode.
When HIGH, the channel is in Message Mode.
13
LE
Local Output Enable Bit
When LOW the channel may be high impedance, either at the device output, or set by an
external buffer dependent upon the LORS pin. When HIGH the channel is active.
12-8
LSAB4-0
Source Stream Address Bits
The binary value of these 5 bits represents the input stream number.
Ignored when LMM is set HIGH.
7-0
LCAB7-0
Source Channel Address Bits
The binary value of these 8 bits represents the input channel number when LMM is set
LOW. Transmitted as data when LMM is set HIGH.
Table 11 - LCM Bits for Local-to-Local and Backplane (Non-32 Mb/s Mode)-to-Local Switching
Bit
Name
Description
15
LSRC
Source Control Bit.
When LOW, the source is from the Backplane input port (Backplane Data Memory).
When HIGH, the source is from the Local input port (Local Data Memory).
Ignored when LMM is set HIGH.
14
LMM
Local Message Mode Bit
When LOW, the channel is in Connection Mode.
When HIGH, the channel is in Message Mode.
13
LE
Local Output Enable Bit
When LOW, the channel may be high impedance, either at the device output or set by an
external buffer, dependent upon the LORS pin. When HIGH, the channel is active.
12-9
LSAB3-0
Source Stream Address Bits.
The binary value of these 4 bits represents the input stream number.
Ignored when LMM is set HIGH.
8-0
LCAB8-0
Channel Address Bits.
The binary value of these 9 bits represents the input channel number, when LMM is LOW.
Bits LCAB7-0 transmitted as data when LMM is set HIGH.
Table 12 - LCM Bits for Backplane(32 Mb/s Mode)-to-Local Switching
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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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