DESCRIPTION
The STV0056AF 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 DEMODULA TORS
■ PLL DEMODULATION WITH 5-10MHz FREQUENCY SYNTHESIS
■ PROGRAMMABLE FM DEMODULATOR BANDWIDTH ACCOMODATING FM DEVIATIONS FROM ±30kHz TILL ±400kHz
■ PROGRAMMABLE 50/75µs, 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 IN VERTER
■ 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