STV8257D中文資料意法半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書

Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

The STV82x7 family, based on audio digital signal processors (DSP), performs high quality and advanced dedicated digital audio processing.These devices provide all of the necessary resources for automatic detection and demodulation of analog audio transmissions for European and Asian terrestrial TV broadcasts.

Key Features

■Full-Automatic Multi-Standard Demodulation

●B / G / I / L / M / N / D / K Standards

●Mono AM and FM

●FM 2-Carrier (German and Korean Zweiton) and NICAM

■Multi-Channel Capability

●3 I2S digital inputs, S/PDIF (in/out)

●5.1 analog outputs

●Dolby?Pro Logic?

●Dolby?Pro Logic II?

■Sound Processing

●ST royalty-free processing: ST WideSurround, ST OmniSurround, ST Dynamic Bass, SRS?WOW?,

SRS?TruSurround XT? which is Virtual Dolby? Surround and Virtual Dolby?Digital compliant

●Independent Volume / Balance for Loudspeakers and Headphone

●Loudspeakers: Smart Volume Control (SVC), 5-band equalizer and loudness

●Headphone: Smart Volume Control (SVC), Bass Treble, Loudness and SRS?Tr u Ba s s?

■Analog Audio Matrix

●4 stereo inputs

●3 stereo outputs

●THRU mode

■Audio Delay for Audio Video Synchronization

●Embedded stereo delay up to 120 ms for lip-sync function (up to 180 ms for tuner input)

●Independent delay on headphone and loudspeaker channels

Typical Applications

●Analog and digital TV with virtual surround sound

●Analog and digital TV with multi-channel surround sound

●DVD and HDD recorders

●“Palm size” portable TV