Description
The STV6412B is a highly integrated I²C bus controlled audio and video switch matrix, optimized for use in digital set-top box applications. It provides all the audio and video routings required in a full two-SCART set-top box design.
In an LQFP64 (14 × 14 × 1.4 mm) package, the STV6412B is compatible with the STV6412A.

Features
■ I²C bus control
■ Standby mode with interrupt signal output
■ Video section
   – 4 CVBS inputs, 3 CVBS outputs (one with selectable chroma trap filter)
   – 3 Y/C inputs, 2 Y/C outputs
   – Switchable LPFs (low pass filters) on 6 inputs
   – 6 dB gain on all CVBS/Y and C outputs
   – Integrated 150 Ω buffers
   – 1 Y/C adder
   – 2 RGB/FB inputs, 1 tri-state RGB/FB output with 6 dB adjustable gain (from +3 dB to +9 dB)
   – Video muting on all outputs
   – 2 slow blanking inputs/outputs
   – Sync bottom clamp on all CVBS/Y and RGB inputs, average clamp on C inputs
   – SVHS switch on C VCR output
   – Bandwidth: 15 MHz
   – Crosstalk: 50 dB minimum
■ Audio section
   – 4 Stereo inputs, 3 stereo outputs
   – 1 mono-sound output
   – Stereo-to-mono sound capability
   – 0/6/9 dB selectable gain on one stereo input
   – Full range volume control with soft control
   – Audio muting on all outputs