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DESCRIPTION

The STV0056A BICMOS integrated circuit realizes all the necessary signal processing from the tuner to the Audio/Video input and output connectors regardless the satellite system.

SOUND

■ TWO INDEPENDENT SOUND DEMODULATORS

■ PLL DEMODULATION WITH 5-10MHz FREQUENCY SYNTHESIS

■ PROGRAMMABLE FM DEMODULATOR BANDWIDTH ACCOMODATING FM DEVIATIONS FROM ±30kHz TILL ±400kHz

■ PROGRAMMABLE 50/75?s, J17 OR NO DEEMPHASIS

■ WEGENER PANDA SYSTEM

■ TWO AUXILIARY AUDIO INPUTS AND OUTPUTS

■ GAIN CONTROLLED AND MUTEABLE AUDIO OUTPUTS

■ HIGH IMPEDANCE MODE AUDIO OUTPUTS FOR TWIN TUNER APPLICATIONS

VIDEO

■ COMPOSITE VIDEO 6-bit 0 to 12.7dB GAIN CONTROL

■ COMPOSITE VIDEO SELECTABLE INVERTER

■ TWO SELECTABLE VIDEO DE-EMPHASIS NETWORKS

■ 6 x 3 VIDEO MATRIX

■ BLACK LEVEL ADJUSTABLE OUTPUT FOR ON-BOARD VIDEOCRYPT DECODER

■ HIGH IMPEDANCE MODE VIDEO OUTPUTS FOR TWIN TUNER APPLICATIONS

MISCELLANEOUS

■ 22kHz TONE GENERATION FOR LNB CONTROL

■ I2C BUS CONTROL CHIP ADDRESSES = 06HEX OR 46HEX

■ LOW POWER STAND-BY MODE WITH ACTIVE AUDIO AND VIDEO MATRIXES