PEF24902 datasheet, PDF - EEWORLD Datasheet

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PEF24902: DescriptionISDN Echo Canceller, Basic, 1-Func, CMOS, PQFP64, PLASTIC, MQFP-64; CategoryWireless rf/communication Telecom circuit; File Size166KB，2 Pages; ManufacturerInfineon; Websitehttp://www.infineon.com/

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PEF24902 Overview

ISDN Echo Canceller, Basic, 1-Func, CMOS, PQFP64, PLASTIC, MQFP-64

PEF24902 Parametric

Parameter Name	Attribute value
Parts packaging code	QFP
package instruction	PLASTIC, MQFP-64
Contacts	64
Reach Compliance Code	compli
data rate	144 Mbps
ISDN access rate	BASIC
JESD-30 code	S-PQFP-G64
length	14 mm
Number of functions	1
Number of terminals	64
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Minimum output high voltage	4 V
Maximum output low current	0.001 A
Maximum output low voltage	0.33 V
Package body material	PLASTIC/EPOXY
encapsulated code	QFP
Encapsulate equivalent code	QFP64,.66SQ,32
Package shape	SQUARE
Package form	FLATPACK
power supply	5 V
Certification status	Not Qualified
reference point	U
Maximum seat height	2.45 mm
standard	ANSI T1.601
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Telecom integrated circuit types	ISDN ECHO CANCELLER
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.8 mm
Terminal location	QUAD
width	14 mm
Base Number Matches	1

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RELIMINARY

R O D U C T

R I E F

IEC4-T

PEF 24901 V2.1 (DFE-T)

PEF 24902 V2.1 (AFE)

ISDN Echocancellation Circuit

4-Channel for 4B3T Line Code

The widely used ISDN 4-channel chipset IEC4-T

consisting of the analog frontend PEB/F 24902

(AFE) and the digital frontend PEB/F 24901

(DFE-T) has been optimized by a redesign of the

digital part. The improvements of the DFE-T are a

reduced supply-voltage due to its advanced low

power 3.3V-CMOS-technology, the doubling of the

IOM

-2 data-rate up to 4 Mbit/s and new features in

terms of testability and analysis. The IEC4-T

chipset fulfills all relevant FTZ, ETSI and ITU stan-

dards. Because of its multichannel-architecture it

is extremely suitable for highly integrated

ISDN linecards.

Applications

Central office digital linecard

Access network linecards

PBX linecards

Features

Two chip solution featuring full

duplex data transmission and

reception over two-wire metallic

subscriber loops providing 4x

ISDN basic rate access

Fully compliant to:

- FTZ Guideline 1TR220

- ETSI TS 102 080 (1998)

- Recommendation ITU-T I.430

4B3T block code at 120 kHz

symbol rate

Loop length without repeater:

- up to 4.2 km on 0.4 mm wire

- up to 8.0 km on 0.6 mm wire

LT mode

Low power consumption

IOM

-2 interface for

stand alone mode

1 kbit/s maintenance channel for

transmission of data loopback

commands and detected

transmission errors

Masterclock generated by PLL

Activation and deactivation

Adaptive echo cancellation and

equalization

Automatic gain control and

polarity adaption

4 relay driver pins per channel to

switch relays or power controller

2 status pins per channel

Extended temperature range

(40°C to +85°C)

JTAG Boundary Scan

P-MQFP-64 package

Part of the Infineon

System Solution

Add-On Features of the DFE-T

PEF 24901 V2.1 compared to V1.x

Max. IOM

-2 data rate 4 Mbit/s

(DCL = 8 MHz)

+3.3 V instead of +5 V

power supply

Dedicated pins for SSP and

DT test modes

DOUT configurable either as

open drain or push-pull

(tristate) output

New MON-12 class features

internal register access

Additional digital local loops

Bit Error Rate Measurement

per port

Optimized LT-state machine

Backward compatibility to V1.x:

- no software changes required

- pinning-compatible

ISDN

I S D N

4-Channel Chipset

N e v e r

s t o p

t h i n k i n g .

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