MT9079 Mitel Semiconductor, MT9079 Datasheet

MT9079

Manufacturer Part Number

MT9079

Description

CMOS ST-BUS FAMILY Advanced Controller for E1

Manufacturer

Mitel Semiconductor

Datasheet

1.MT9079.pdf (54 pages)

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Part Number:

MT9079AE

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Features

•

Applications

•

DLCLK

C4i/C2i

RxMF

Meets applicable requirements of CCITT

G.704, G.706, G.732, G.775, G.796, I.431 and

ETSI ETS 300 011

HDB3, RZ, NRZ (fibre interface) and bipolar

NRZ line codes

Data link access and national bit buffers (five

bytes each)

Enhanced alarms, performance monitoring and

error insertion

Maskable interrupts for alarms, receive CAS bit

changes, exception conditions and counter

overflows

Automatic interworking between CRC-4 and

non-CRC-4 multiframing

Dual transmit and receive 16 byte circular

channel buffers

Two frame receive elastic buffer with controlled

slip direction indication and 26 channel

hysteresis (208 UI wander tolerance)

CRC-4 updating algorithm for intermediate path

points of a message-based data link application

Primary rate ISDN network nodes

Digital Access Cross-connect (DACs)

CO and PABX switching equipment interfaces

E1 add/drop multiplexers and channel banks

Test equipment and satellite interfaces

TxMF

DSTo

RxDL

TxDL

DSTi

Interface

Control

F0i

(fig. 3)

Port

Interface

Control

Interface

Buffer

Data

Link

National

Buffer

Bit

ABCD

Signal

Buffer

Frame MUX/DEMUX

Figure 1 - Functional Block Diagram

Transmit & Receive

Dual 16

Byte Rx

Buffer

Code

Gen.

Test

Dual 16

Byte Tx

Buffer

ST-BUS Timing

Description

The MT9079 is a feature rich E1 (PCM 30, 2.048

Mbps) link framer and controller that meets the latest

CCITT and ETSI requirements.

The MT9079 will interface to a 2.048 Mbps

backplane and can be controlled directly by a

parallel processor, serial controller or through the

ST-BUS.

Extensive alarm transmission and reporting, as well

as exhaustive performance monitoring and error

diagnostic features make this device ideal for a wide

variety of applications.

CMOS ST-BUS

Slip Control

Buffer With

2 Frame Rx

Performance

Monitoring &

MT9079AC

MT9079AE

MT9079AL

MT9079AP

Elastic

Control

Detector

Alarm

Phase

Timing

Circuit

Advanced Controller for E1

Ordering Information

-40° to 85°C

40 Pin Ceramic DIP

40 Pin Plastic DIP

44 Pin QFP

44 Pin PLCC

ISSUE 2

Interface

PCM 30

FAMILY

Link

(E1)

to all registers

and counters

256

Timing

Circuit

MT9079

TAIS

TxA

TxB

E2i

E8Ko

RxA

RxB

RESET

May 1995

4-237

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