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.

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.

APPLICATIONS
• Digital Enhanced Cordless Telephony (DECT)
• CT2 cordless
• Speech compression.