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參數(shù)資料
| 型號(hào)： | MT8985 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Enhanced Digital Switch(加強(qiáng)型數(shù)字開關(guān)) |
| 中文描述： | 增強(qiáng)型數(shù)字交換機(jī)（加強(qiáng)型數(shù)字開關(guān)） |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 147K |
| 代理商： | MT8985 |
2-45
Features
256 x 256 channel non-blocking switch
Programmable frame integrity for wideband
channels
Automatic identification of ST-BUS/GCI
interface backplanes
Per channel tristate control
Patented message mode
Non-multiplexed microprocessor interface
Single +5 volt supply
Available in DIP-40, PLCC-44 and QFP-44
packages
Pin compatible with MT8980 device
Applications
Medium size digital switch matrices
Hyperchannel switching (e.g., ISDN H0)
ST-BUS/MVIP
interface functions
Serial bus control and monitoring
Centralized voice processing systems
Data multiplexer
Description
The MT8985 Enhanced Digital Switch device is an
upgraded version of the popular MT8980D Digital
Switch (DX). It is pin compatible with the MT8980D
and retains all of the MT8980D's functionality. This
VLSI device is designed for switching PCM-encoded
voice or data, under microprocessor control, in digital
exchanges,
PBXs
and
environment. It provides simultaneous connections
for up to 256 64kb/s channels. Each of the eight
serial inputs and outputs consist of 32 64 kbit/s
channels multiplexed to form a 2048 kbit/s stream.
As the main function in switching applications, the
device provides per-channel selection between
variable or constant throughput delays. The constant
throughput delay feature allows grouped channels
such as ISDN H0 to be switched through the device
maintaining its sequence integrity. The MT8985 is
ideal for medium sized mixed voice/data switch and
voice processing applications.
any
ST-BUS/MVIP
Figure 1 - Functional Block Diagram
STo0
STo1
STo2
STo3
STo4
STo5
STo6
STo7
Serial
to
Parallel
Converter
Data
Memory
Frame
Counter
Control Register
Control Interface
Output
MUX
Connection
Memory
Parallel
to
Serial
Converter
CS R/W A5/
A0
DTA D7/
D0
CSTo
C4i
F0i
V
DD
V
SS
ODE
STi0
STi1
STi2
STi3
STi4
STi5
STi6
STi7
DS
DS5408
ISSUE 5
March 1997
MT8985
Enhanced Digital Switch
CMOS ST-BUS
FAMILY
Ordering Information
MT8985AE
40 Pin Plastic DIP
MT8985AP
44 Pin PLCC
MT8985AL
44 Pin QFP
-40
°
C to +85
°
C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8985AE | 制造商:MITEL 功能描述: |
| MT8985AE1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE ENHANCED DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE ENHANCED DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP - Rail/Tube 制造商:Microsemi 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP |
| MT8985AL | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays |
| MT8985AL1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays |
| MT8985AP | 制造商:Microsemi Corporation 功能描述: 制造商:Mitel Networks Corporation 功能描述: 制造商:MITEL 功能描述: |
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