CS6422-IS Datasheet PDF - Cirrus Logic

●General Description

●Most modern speakerphones use half-duplex operation, which alternates transmission between the far-end talker and the speakerphone user. This is done to ensure stability because the acoustic coupling between the speaker and microphone is much higher in speaker phones than in handsets where the coupling is mechanically suppressed.

●Features

●Single-chip,full-duplex,hands-free operation

●Optional Tx Noise Guard

●Programmable attenuation during double-talk

●Optional 34 dB microphone preamplifier

●Dual channel AGC’ed volume controls with mute

●Dual integrated 80 dB IDR codecs

●Speech-trained Network and Acoustic Echo Cancellers

●Rx and Tx supplementary echo suppression

●Configurable half-duplex training mode

●Powerdown mode

●Microcontroller Interface