The STV82x8 devices complement the field-proven STV82x7 family of
processors, for A2/NICAM markets, with the significant addition of up to 117ms
of embedded ‘lip-sync’ delay to compensate for the video processing delay of
flat panel TVs, thereby eliminating the need for external memory. They are
intended for analog, digitized, and digital TV sets in the BTSC markets, which
include the USA, Canada, Mexico, Taiwan, Brazil, and the Philippines.
The family provides a full range of audio processing options, with separate
processing of headphone and loudspeaker channels, including Dolby Pro Logic
I® and Dolby Pro Logic II® for full multi-channel
environments. ST’s royalty-free processing algorithms – which eliminate the
need for costly third-party processing – include ST Widesurround, ST
Omnisurround (which is Virtual Dolby® Surround and Virtual Dolby® Digital
compliant), ST Dynamic Bass, and ST Voice. An embedded sample rate converter
(SRC) allows all data to be processed at 48kHz, whatever its source.
Enhancement technologies include SRS WOW® and SRS TruSurround XT®, with
Smart Volume Control (SVC), 5-band equalizer, and loudness control on
loudspeaker signals. The independent headphone processors include SVC, bass,
treble, loudness, ST Dynamic Bass, and SRS TruBass®. Three I2S (Inter IC Sound)
inputs enable Dolby® Digital data from an MPEG-2 HD decoder, such as ST’s
ST-D2000 single-chip worldwide iDTV processor, to be accepted and processed,
allowing certification of the Virtual Dolby Digital function at TV set
level.
An analog audio matrix controls four or five - depending on package size -
analog audio inputs and three stereo outputs, with pass-thru options, in
addition to the main decoded signals. Independent lip-sync delay is provided
for loudspeaker and headphone channels, with support for additional external
delay in the larger 100-pin package.
The STV82x8 family is a cost-effective single-chip solution for sound
processing in a broad range of TV applications, including iDTV, LCD, plasma,
and rear projection TV, as well as in DVD and HDD recorders.
Now shipping to major worldwide TV manufacturers, devices from the basic
STV8218 up to the fully featured STV8288FDSX are available now in the 14 x 14mm
TQFP80 package, priced from $5 to $7, depending on options. The TQFP100
package, offering greater I/O flexibility, will be available later.
