PCD5096 datasheet(3/52 Pages) PHILIPS

3 / 52 page

1997 Jan 22

Philips Semiconductors

Preliminary speciﬁcation

Universal codec

PCD5096

FEATURES

• Applications in digital terminal equipment featuring line

interface and/or voice functions

• Digital signal processor performing echo cancellation,

codec functions and dial tone detection

• Two independent receive and transmit channels

• Independent programmable gain for all analog inputs

and outputs

• Programmable filter correction functions

• Flexible configuration of all functions

• IOM-2 serial data interface (slave mode only)

• Serial data interface to DTAM speech compression ICs

• 400 kHz I2C-bus slave interface (four I2C-bus

subaddresses)

• Codec compatible with G.714 CCITT specification

• PCM A-Law/u-Law (G.711 CCITT) and 16-bit linear data

• Dual differential inputs and outputs performing the

following functions:

– Line interface connection

– Loudspeaker, speaker phone (hands-free)

– Earpiece, microphone (handset)

• Peripheral interface: two I/O pins

• Separate ringer function

• Tone and ringer generator

• Conference call

• QFP44 package

• Low voltage (2.7 to 3.6 V)

• Low power consumption.

GENERAL DESCRIPTION

The universal codec combines two high resolution

bidirectional analog channels with a DSP in a single chip.

Besides the analog interfaces the PCD5096 includes two

digital interfaces: an I2C-bus interface allowing an external

microcontroller to program the chip, and a 4-wire serial

interface compatible with IOM-2 and with DTAM speech

compression ICs. This programmable serial interface

offers up to 14 channels and is capable of handling 8-bit

(A-law) or 16-bit (linear PCM) data packages, or any

combination of them. It opens the scope for a wide

application area, for example in combination with the

PCD5093H DECT baseband chip for digital cordless

business applications.

Several PCD5096s can be connected together for small

switching systems (PABX) offering a combination of

corded and cordless functionality. Besides the basic

functions like echo cancellation for two channels the

on-chip DSP provides all necessary functions such as

conference call and DTMF.

APPLICATIONS

The PCD5096 is designed for the telecommunications

market and is targeting small business and residential

systems offering a two-line interface or a one-line interface

combined with hands-free speaker phone. Specific

applications are detailed in Chapter 12.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCD5096H

QFP44

plastic quad ﬂat package; 44 leads (lead length 1.3 mm);

body 10

× 10 × 1.75 mm

SOT307-2

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