音频/视频开关和6通道SD / PS / HD视频滤波器 Audio/video switch and 6-channel SD/PS/HD video filter
Description
The is a highly integrated I2C buscontrolled 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.
The STV6418 provides fully integrated solutions for filtering and buffering both SD and HD signals.
Features
■ I2C bus control
■ Auto startup mode: low power consumption
■ Video section:
– Three CVBS inputs, two CVBS outputs
– Three Y/C inputs, three Y/C outputs
– Switchable 8 MHz, 15 MHz or 30 MHz low pass filters LPF on six inputs for standard definition, progressive scan and interleaved high definition, plus bypass 60 MHz for progressive high definition
– Gain of 6 dB on all CVBS/Y and C outputs
– Integrated 150-Ω buffers
– Two RGB/one FB inputs, one high impedance RGB/FB output with 6-dB adjustable gain from +3 dB to +9 dB
– Two YPrPb inputs, one YPrPb/RGB HD output
– AC or DC-coupled video outputs
– Two slow blanking inputs/outputs
– Bottom clamp on all CVBS/Y and RGB inputs, average clamp on C inputs, synchronized clamp on PrPb inputs
– Bi-directional control for VCR R/C output and for TV B output
– AC-coupled inputs and AC- or DC-coupled inputs for video signal from encoder with internal clamp and bias
– Video detection block in low power auto startup mode
– Video muting on all outputs
■ Audio section:
– Three stereo inputs, two stereo outputs
– Stereo-to-mono sound capability
– Differential or single-ended audio input
– Selectable gain of 0, 6 or 9 dB on one stereo input
– Full-range volume control with soft control
– Audio muting on all outputs
Applications
■ Set-top boxes IP, cable, satellite, terrestrial
■ Integrated digital TV plug-in
■ Blu-ray and DVD players