MT9092 Mitel Networks Corporation, MT9092 Datasheet

MT9092

Manufacturer Part Number

MT9092

Description

ISO2-CMOS ST-BUS FAMILY Digital Telephone with HDLC (HPhone-II)

Manufacturer

Mitel Networks Corporation

Datasheet

1.MT9092.pdf (42 pages)

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Download datasheet (483Kb)

Features

•

Applications

•

Programmable µ-Law/A-Law codec and filters

Programmable CCITT (G.711)/sign-magnitude

coding

Programmable transmit, receive and side-tone

gains

DSP-based:

Differential interface to telephony transducers

Differential audio paths

Single 5 volt power supply

X.25 Level 2 HDLC data formatting

Fully featured digital telephone sets

Cellular phone sets

Local area communications stations

VSSD

VSSA

VBias

DSTo

SPKR

DSTi

VRef

VDD

VSS

C4i

i) Speakerphone switching algorithm

ii) DTMF and single tone generator

iii) Tone Ringer

F0i

AAAA

Digital Signal Processor

C-Channel

Registers

AAAA

22.5/-72dB

HDLC

Tx & Rx

AAAA

1.5dB

AAAA

LCD Driver

AAAA

Figure 1 - Functional Block Diagram

S12

AA AA

Circuits

Timing

AAAA

Registers

STATUS

Control

Filter/Codec Gain

ENCODER

DECODER

AAAA

ISO

Digital Telephone with HDLC (HPhone-II)

AAAA

WD PWRST IC

Description

The MT9092 HPhone-II is a fully featured integrated

digital telephone circuit which includes an HDLC

data formatter. Voice band signals are converted to

digital PCM and vice versa by a switched capacitor

Filter/Codec.

differential

operation over a wide dynamic range with a single

5V supply.

handsfree speaker-phone operation.

also used to generate tones (DTMF, Ringer and Call

Progress) and control audio gains. Internal registers

are accessed through a serial microport conforming

to INTEL MCS-51™

fabricated

technology.

-CMOS ST-BUS

AAAA

-7dB

7dB

AAAA

A A

Converter

architecture

S/P &

MT9092AP

P/S

A Digital Signal Processor provides

Generator

New Call

The Filter/Codec uses an ingenious

Transducer

Interface

Tone

Mitel's

Ordering Information

-40°C to +85°C

Compatible)

(

specifications. The device is

MCS-51

Serial

ISSUE 2

Port

FAMILY

low

44 Pin PLCC

achieve

power

MT9092

The DSP is

ISO

low

MIC-

MIC+

M-

M+

HSPKR+

HSPKR-

SPKR+

SPKR-

DATA 2

DATA 1

SCLK

IRQ

-CMOS

May 1995

noise

7-3

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