STV8247_06 Datasheet, PDF (9/156 Pages) STMicroelectronics – Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

STV82x7
General Description
1.1 STV82x7 Overview
1.1.1
Core Features
● Single audio source processing:
— IF source and/or analog stereo input (SCART)
— one digital source with a maximum of 6 synchronous channels (5.1 is obtained across three
I²S)
● SIF input signal with Automatic Gain Control (AGC)
● Digital Demodulator with automatic standard detection and demodulation for AM, FM mono,
FM 2 carriers (German or Korean FM 2-carrier) and NICAM
● Audio processor working at 32 kHz, 44.1 kHz or 48 kHz with specific features:
® ® — For Loudspeakers (L, R, LS, RS, SubW, C):
Dolby Pro Logic II Decoder with Bass Management
SRS® WOW™ or TruSurround XT™ including Virtual Dolby® Surround and Virtual Dolby®
Digital
ST WideSurround
ST OmniSurround
ST Dynamic Bass
5-band Equalizer or Bass-Treble
Loudness
Smart Volume Control
Volume/Balance/Soft-mute
Beeper
Video Processing Delay Compensation
— For Headphone:
SRS® TruBass™
Smart Volume Control
Bass-Treble
Loudness
Volume/Balance/Soft-mute
Beeper
Video Processing Delay Compensation
● Shared outputs for headphone and loudspeakers surround channels:
● Analog matrix with:
— five external inputs:
four SCART inputs (2 V_RMS capable)
one analog mono input (0.5 V_RMS)
— one internal input from a digital matrix via a DAC
— three external outputs (2 V_RMS capable)
— one internal output for the digital matrix (using an internal ADC)
● Digital matrix with:
— three input modes (Demodulator/SCART, SCART only and I²S)
— three stereo outputs (Loudspeakers, Headphone and SCART)
● High-end audio DAC
● S/PDIF pass-thru/output for connection with an external amplifier/decoder
● Internal multiplexer for the S/PDIF output (to share the internal S/PDIF output and the S/PDIF
output generated by the external decoder of the digital broadcast)
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