MT9094 - Fully Featured Digital Telephone Circuit

MT9094 - Fully Featured Digital Telephone Circuit

With Embedded DSP for Tone Generation and Hands Free Operation (Zarlink Semiconductor).

The MT9094 Dphone-II is a fully featured integrated digital telephone circuit. Voice band signals are converted to digital PCM and vice versa by a switched capacitor Filter/Codec. The Filter/Codec uses an ingenious differential architecture to achieve low noise operation over a wide dynamic range with a single 5 V supply. A Digital Signal Processor provides handsfree speaker-phone operation. The DSP is also used to generate tones (DTMF, Ringer and Call Progress) and control audio gains. Internal registers are accessed through a serial microport conforming to INTEL MCS-51 specifications.

Zarlink Semiconductor Inc