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| 型號： | MT8980 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 80K |
| 代理商： | MT8980 |
A-105
Table of Contents
1.0 Introduction
2.0 The ST-BUS
3.0 Architecture of MT8980
3.1 ST-BUS Interface to the MT8980/81
3.2 Microprocessor interface
3.3 Internal structure
3.4 Programming Examples
4.0 Delay through the MT8980
4.1 Switching Mode
4.2 Message Mode
5.0 Microprocessor Accesses
6.0 External Control Using CSTo
7.0 High Impedance Capability
7.1 Initialization of the MT8980
1.0 Introduction
The MT8980 and the MT8981 are digital crosspoint
switches. Any information in an ST-BUS channel
(digitized audio, digitized video or data), can be input
to the MT8980/81 and then switched to anyone of the
its ST-BUS output channels. The MT8980/81 is
easily controlled by a microprocessor. The
microprocessor can read the contents of all of the
input channels and can write information to and read
information from all of the output channels.
These capabilities make the MT8980/81 an integral
part of a very efficient system of information
transport, the ST-BUS. The MT8980/81 provides the
ST-BUS system with communication path flexibility.
This is a prerequisite in today’s systems, which
Figure 1 - Block Diagram of the MT8980
STi0
STi1
STi7
F0i
C4i
ODE
DTA
E
CS
A0-A4
A5
R/W
D0-D7
Serial-to-Parallel
Converter 0
Serial-to-Parallel
Converter 1
Serial-to-Parallel
Converter 7
I/P Timing
Counter
Sync.
Logic
Control
Register
Micro-
processor
Interface
Data
Memory
0
Data
Memory
1
Data
Memory
7
Address
A0
Y0
A1
OUTPUT
MUX
Y1
A7
B0-7
Y7
Select
Address
MUX
O/P Timing
Counter
Address
MUX
Connection
Memory
CM 0
CM 1
CM 7
HIGH
LOW
HIGH
LOW
HIGH
LOW
Address
Parallel-to- Serial
Converter 0
Parallel-to-Serial
Converter 1
Parallel-to-Serial
Converter 7
3-State
Control
STo0
STo1
STo7
CSTo
ISSUE 1
June 1986
MSAN-123
The MT8980 and the MT8981
Digital Crosspoint Switches
Application Note
相關PDF資料 |
PDF描述 |
|---|---|
| MT8982 | ISO-CMOS ST-BUS⑩ FAMILY Small Digital Switch (MiniDX) |
| MT8982AC | ISO-CMOS ST-BUS⑩ FAMILY Small Digital Switch (MiniDX) |
| MT8982AE | ISO-CMOS ST-BUS⑩ FAMILY Small Digital Switch (MiniDX) |
| MT8982AN | ISO-CMOS ST-BUS⑩ FAMILY Small Digital Switch (MiniDX) |
| MT8982AS | ISO-CMOS ST-BUS⑩ FAMILY Small Digital Switch (MiniDX) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MT8980D | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:ISO-CMOS ST-BUS Family Digital Switch |
| MT8980D-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
| MT8980DE | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 5V 40PDIP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 5V 40PDIP - Rail/Tube |
| MT8980DE1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 5V 40PDIP - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 5V 40PDIP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE DIGITAL SWITCH |
| MT8980DP | 制造商:Mitel Networks Corporation 功能描述: 制造商:ZARLINK 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
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