MT8926 Ver la hoja de datos (PDF) - Mitel Networks

Número de pieza

componentes Descripción

Fabricante

MT8926

ISO-CMOS ST-BUS™ FAMILY T1 Performance Monitoring Adjunct Circuit (PMAC)

Mitel Networks 

ISO-CMOS ST-BUS™ FAMILY MT8926

®

T1 Performance Monitoring

Adjunct Circuit (PMAC)

Features

• ANSI T1.403 and T1.408 Performance

Monitoring and Maintenance Functions

• Operates in conjunction with Mitel's T1/ESF

framer circuits (MT8976/77 and MH89760B)

• D3/D4 (SF), and ESF modes of operation

• One and two second timers

• Supports bit-oriented and message-oriented

data transfer over the Facility Data Link (FDL)

• ESF and D3/D4 Yellow Alarms, Alarm Indication

Signal and Loss of Signal Indication

• Framing Error, CRC Error and Bipolar Violation

Error counters

• Alarm interrupts and counter overflow interrupts

Applications

• T1 line performance data collection

• CSU performance monitoring

• ISDN Primary Rate maintenance controller

ISSUE 3

Ordering Information

July 1993

MT8926AE

MT8926AP

28 Pin Plastic DIP

28 Pin PLCC

-40°C to 85°C

Description

The MT8926 Performance Monitoring Adjunct Circuit

(PMAC) interworks with Mitel's MT8976/77 and

MH89760B to provide performance monitoring data,

alarms and T1 maintenance features.

It meets the performance monitoring and

maintenance requirements of ANSI T1.403 and

T1.408, and also supports Channel Service Unit

(CSU) requirements.

FDLi

E8Ki

IRQ

C2i

CSTi0

CSTi1

CSTo

RESET

DSTi0

DSTi1

DSTo

F0i

Transmit BOM

Register

Receive BOM Register &

RAI Debounce

ST-BUS

Interface

Snap-

Shot

Registers

Payload

& Line

Loopback

Control

8 Bit CRC

Counter CSI

Timer

4 Bit SE

SEI Counter

4 Bit FE

FSI Counter

8 Bit BPV

BSI Counter

E8K/FDL

Mux

FDL

Extractor

Framer,

SE/FE

Detector

Line

Loopback

Integrator

B8ZS

Recovery,

BPV Detector

AIS/LOS

Detector

Figure 1 - Functional Block Diagram

E8Ko

FDLo

VDD

VSS

RxA

RxB

ECLK

1SEC

4-3

Share Link: