Enhanced Full-Duplex Speakerphone IC

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

GSM/DCS1800/PCS1900 Baseband Processing Chipset

GENERAL DESCRIPTION The Analog Devices GSM Baseband Processing Chipset provides a competitive solution for GSM based Mobile Radio Systems. It is designed to be fully integrated, easy to use, and compat ible with a wide range of product solutions. Examples are GSM900, DCS1800, PCS1900 handset

High speed and Simple 4-Bit Microcontroller

GENERAL DESCRIPTION The MSM6422 is a low-power, single-chip device implemented in complementary metal-oxide semiconductor technology. The MSM6422 can be used in place of logic ICs configured around a main CPU, or for small-scale systems such as home electronic equipment. FEATURES • ROM : 2048

BUS-CONTROLLED AUDIO MATRIX

DESCRIPTION The TEA6422 switches 6 stereo audio inputs on 3 stereo outputs. All the switching possibilities are changed through the I2C BUS. ■ 6 Stereo Inputs ■ 3 Stereo Ouputs ■ Gain Control 0 dB/Mute for each Output ■ Cascadable (2 different addresses) ■ Serial Bus Controlled ■ Very

BUS-CONTROLLED AUDIO MATRIX

DESCRIPTION The TEA6422 switches 6 stereo audio inputs on 3 stereo outputs. All the switching possibilities are changed through the I2C BUS. ■ 6 Stereo Inputs ■ 3 Stereo Ouputs ■ Gain Control 0 dB/Mute for each Output ■ Cascadable (2 different addresses) ■ Serial Bus Controlled ■ Very