MT9046 Zarlink Semiconductor, MT9046 Datasheet

MT9046

Manufacturer Part Number

MT9046

Description

T1/E1 System Synchronizer with Holdover

Manufacturer

Zarlink Semiconductor

Datasheet

1.MT9046.pdf (34 pages)

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Features

•

Supports AT&T TR62411 and Bellcore GR-1244-

CORE, Stratum 4 Enhanced and Stratum 4 timing

for DS1 interfaces

Supports ETSI ETS 300 011, TBR 4, TBR 12 and

TBR 13 timing for E1 interfaces

Selectable 19.44 MHz, 1.544 MHz, 2.048 MHz or

8kHz input reference signals

Provides C1.5, C2, C4, C6, C8, C16, and C19

(STS-3/OC3 clock divided by 8) output clock

signals

Provides 5 styles of 8 KHz framing pulses

Holdover frequency accuracy of 0.2 PPM

Holdover indication

Attenuates wander from 1.9 Hz

Fast lock mode

Provides Time Interval Error (TIE) correction

Accepts reference inputs from two independent

sources

JTAG Boundary Scan

TRST

RSEL

TMS

TDO

TCK

SEC

TDI

PRI

OSCi

Master Clock

Reference

Zarlink Semiconductor US Patent No. 5,602,884, UK Patent No. 0772912,

1149.1a

Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

Select

MUX

IEEE

France Brevete S.G.D.G. 0772912; Germany DBP No. 69502724.7-08

Control State Machine

MS1 MS2

OSCo

Reference

Select

Corrector

Enable

Reference

Selected

TIE

RST

Corrector

Figure 1 - Functional Block Diagram

Circuit

HOLDOVER

TCLR

TIE

Select

State

Zarlink Semiconductor Inc.

Reference

PCCi

Virtual

FLOCK

Applications

•

Description

The MT9046 T1/E1 System Synchronizer contains a

digital phase-locked loop (DPLL), which provides timing

and synchronization signals for multitrunk T1 and E1

primary rate transmission links. The device has

reference switching and frequency holdover capabilities

synchronization interruptions.

LOCK

Synchronization and timing control for Customer

Premises Equipment (CPE)

ST-BUS clock and frame pulse sources

Impairment

help

Monitor

Input

DPLL

Feedback

VDD

Select

State

maintain

MT9046AN 48 pin SSOP

T1/E1 System Synchronizer

VSS

Ordering Information

-40°C to +85°C

FS1

Frequency

Interface

Output

Select

Circuit

connectivity

MUX

FS2

with Holdover

during

Data Sheet

MT9046

temporary

C19o

C1.5o

C2o

C4o

C6o

C8o

C16o

F0o

F8o

F16o

RSP

TSP

April 2004

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