Datasheet > MT90812AL

MT90812AL

更新时间： 2024-11-19 10:43:47

品牌	Logo	应用领域
MITEL		开关电信集成电路
页数	文件大小	规格书
105页	336K
描述
Integrated Digital Switch (IDX)

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MT90812AL 数据手册

MT90812

Integrated Digital Switch (IDX)

Advance Information

DS5219

ISSUE 2

December 1999

Features

Ordering Information

•

192 channel x 192 channel non-blocking

switching

MT90812AP

MT90812AL

68 Pin PLCC

64 Pin MQFP

-40 to +85°C

2 local bus streams @ 2Mb/s supports up to 64

channels

Description

In TDM mode, the expansion bus supports up

to 128 channels at 8.192 Mb/s

Rate conversion capability between local and

expansion bus streams

By integrating key functions needed in voice telecom

application, the Integrated Digital Switch (IDX)

provides a solution-on-a-chip for key telephone

systems, PBX applications or CTI designs. Figure 2

shows a typical conﬁguration.

Integrated conference bridge, supporting 15

parties over 5 bridges

•

Integrated PLL

Frequency Shift Keying (FSK) 1200 baud

transmitter, meeting Bell 202 or CCITT V.23

standards

The MT90812 provides non-blocking timeslot

interchange capability for B, C and D channels, up to

a maximum of 192 channels. It offers conference call

capability for 15 parties over a maximum of 5

conference bridges. With its integrated PLL, the

MT90812 provides the necessary clocks to support

•

32 channel dual tone generator, including 16

standard DTMF tones and tone ringer

Expansion bus in IDX Link mode, allows the

interconnection of up to 4 IDX devices

peripheral

devices,

such

codecs

Programmable per channel gain control from +3

to -27dB, increments of 1dB for output channels

interconnected IDX devices. Integrated into the IDX

is the capability to detect supervisory signalling and

to generate FSK 1200-baud signals. In addition, an

Supervisory signalling cadence detection

capability

integrated

digital

tone

generator

produces

continuous dual tones, including standard DTMF.

•

HDLC resource allocator

D-channel buffering of message information

With its programmable gain control, the IDX allows

users to use codecs without gain control and also

centrally manage conference calls.

C-channel access for control and status

registers

•

Provides both variable and constant delay

modes

To support both small and large switching platforms,

a built-in expansion Bus allows the interconnection of

up to 4 IDX devices or external components such as

Parallel microprocessor port, compatible to Intel

and Motorola and National CPU’s

•

Supports both A-law or u-law operation

digital switches. When

IDX devices are

Supports both ST-BUS, GCI and HMVIP

framing formats

interconnected, the array is capable of switching 256

channels (64x4), handling 60 conference parties

(15x4) and generating additional tones including

programmable ones. Other functions are also

increased in this conﬁguration. The functional block

diagram is shown in Figure 1.

Applications

•

Computer Telephony Integration (CTI)

Key Telephone Systems

An evaluation board, MEB90812, is available

complete with software and a user manual, which

demonstrates the layout of a typical application

board and facilitates the use of the MT90812, and

peripheral devices such as Mitel’s DNIC products.

Private Branch Exchange (PBX) Systems

12 3 4 5 6 7...105

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与MT90812AL相关器件

型号	品牌	获取价格	描述	数据表
MT90812AL1	MICROSEMI	获取价格	Digital Time Switch, CMOS, PQFP64, 14 X 20 MM, 2.80 MM HEIGHT, LEAD FREE, MO-112CA-1, MQFP
MT90812AP	MITEL	获取价格	Integrated Digital Switch (IDX)
MT90812AP1	MICROSEMI	获取价格	Digital Time Switch, PQCC68, LEAD FREE, PLASTIC, MS-018AE, LCC-68
MT90812APR	MICROSEMI	获取价格	Digital Time Switch, CMOS, PQCC68, PLASTIC, MS-018AE, LCC-68
MT90812APR	ZARLINK	获取价格	Digital Time Switch, PQCC68, PLASTIC, MS-018AE, LCC-68
MT90812APR1	ZARLINK	获取价格	Digital Time Switch, PQCC68, LEAD FREE, PLASTIC, MS-018AE, LCC-68
MT9081-HRG	MARKTECH	获取价格	Marktech 3 Leaded 10mm Bi−Color LEDs
MT90820	ZARLINK	获取价格	Large Digital Switch
MT90820	MITEL	获取价格	CMOS ST-BUS? FAMILY Large Digital Switch (LDX)
MT90820AL	MITEL	获取价格	CMOS ST-BUS? FAMILY Large Digital Switch (LDX)

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