1997 Jul 21

9

Philips Semiconductors

Objective specification

DECT baseband controller

PCD5094

6

FUNCTIONAL DESCRIPTION

The PCD509x is a family of single-chip controllers, designed for use in Digital Enhanced Cordless Telecommunications

systems (DECT). The family is designed for minimum component-count and minimum power consumption. All controllers

implemented. The Burst Mode Logic (BML) performs the time-critical MAC layer functions for applications in DECT

handsets and base stations. The ADPCM transcoding is in compliance with the CCITT recommendation G.721 and

includes receive and transmit filters.

Fig.3 Block diagrams of DECT systems with PCX509x.

a. Handset.

b. Basestation (PCD5094) with analog interface and echo cancellation; up to 6 portables can be handled.

c. Base with digital interface and analog corded handset connected; up to 6 portables can be handled.

handbook, full pagewidth

MGD797

MICROPHONE

EARPIECE

PCD5091

RADIO

CIRCUITS

handbook, full pagewidth

PCD5092/

PCD5094

MBH945

LINE

INTERFACE

(e.g. TEA1118)

a/b line

u-law TAM switch

RADIO

CIRCUITS

handbook, full pagewidth

PCD5093

MBH939

MICROPHONE

Handsfree

Interface to ISDN or

n-line analog line

interface (PCD5096)

EARPIECE

RADIO

CIRCUITS

2

2 x IOM or

2 x ADPCM-CODEC

or a combination