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.

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.