Philips Semiconductors
ADPCM CODEC for digital cordless
telephones
Product specification
PCD5032
1 FEATURES
• G.721 compliant ADPCM encoding and decoding
• ‘Bitstream’ analog-to-digital and digital-to-analog
conversion
• On-chip receive and transmit filter
• On-chip ringer and tone generator
• Programmable gain of receive and transmit path
• Serial ADPCM interface with independent timing for
maximum flexibility
• Linear PCM data accessible for digital echo cancelling
• Programmable via I2C-bus interface
• Fast receiver mute input via pin
• On-chip reference voltage
• On-chip symmetrical supply for electret microphone
• Few external components
• Low power consumption in standby mode
• Low supply voltage (single supply 2.7 V up to 5.5 V)
• CMOS technology
• Minimized EMC on digital outputs.
2 APPLICATIONS
• Digital Enhanced Cordless Telephony (DECT)
• CT2 cordless
• Speech compression.
3 GENERAL DESCRIPTION
The PCD5032 is a CMOS device designed for use in
Digital Enhanced Cordless Telephone systems (DECT),
but also suitable for other cordless telephony applications
such as CT2. The PCD5032 performs analog-to-digital
and digital-to-analog conversion, ADPCM encoding and
decoding compliant to CCITT recommendation “G.721
(blue book, 1988)”. The PCD5032 contains on-chip
microphone and earpiece amplifiers. The device can be
used in both handset and base station designs.
4 ORDERING INFORMATION
TYPE
NUMBER
PCD5032H
PCD5032T
NAME
QFP44
SO28
PACKAGE
DESCRIPTION
plastic quad flat package; 44 leads (lead length 2.35 mm);
body 14 × 14 × 2.2 mm
plastic small outline package; 28 leads; body width 7.5 mm
VERSION
SOT205-1
SOT136-1
1997 Apr 03
3