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YSS944 Fiches technique(PDF) 1 Page - YAMAHA CORPORATION |
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YSS944 Fiches technique(HTML) 1 Page - YAMAHA CORPORATION |
1 / 34 page YSS944/943/940 ADAMB Advanced Digital Audio Multi channel decode processor YSS944/943/940 CATALOG CATALOG No.: LSI-4SS944A31 2005.6 Outline The YSS944 (ADAMB-f)/YSS943 (ADAMB-b)/YSS940 (ADAMB-nd) is an audio decoding digital signal processor that integrates onto a single chip the various digital signal processing functions required for AV amplifiers, etc. It includes an advanced 32-bit floating-point DSP and is able to decode a variety of audio formats. [Note] • The contents described in this manual are implemented by downloading boot firmware. For detailed information about the boot firmware, please contact YAMAHA. • The YSS943 cannot execute DTS-ES and DTS Neo:6 decoding. • The YSS940 cannot execute any decoding related to DTS (DTS, DTS-ES, DTS 96/24, and DTS Neo:6). Features • Supports various types of decoding up to 7.1 channels (5.1/6.1/7.1 channels selectable). • 5.1-channel decoding of Dolby Digital (AC-3), DTS, AAC. • 6.1-channel decoding of Dolby Digital EX, DTS-ES. • DTS 96/24 decoding and audio interface clock division/switching functions. • Dolby Pro Logic IIx and DTS Neo:6 decoding • Tone control and bass management functions • Function modification/expansion by downloading firmware to on-chip memory • Lip-sync function that enables synchronization of voice and video with variable voice delay • Supports sampling frequencies up to 192 kHz during PCM playback. • 1/2 down sampling function when two PCM channels are played back • Dolby Digital/DTS/AAC decode information output function (can be read by microprocessor) • High-speed/high-accuracy operation by 32-bit floating-point DSP Operating frequency: 180 MHz (178.176 MHz) Data bus width: 32 bits (24-bit mantissa and 8-bit exponent) Multiplier/adder: 32 bits × 32 bits + 55 bits → 55 bits (47-bit mantissa and 8-bit exponent) • No external memory needed (external memory is used when delay is increased.) • Eight general I/O ports • On-chip PLL for generation of high-speed internal operating clock • Supply voltage: 1.2 V (core block) and 3.3 V (pin block) • Low power consumption: about 210 mW (standard value during Dolby Digital decoding) • Si-gate CMOS process • Lead-free plating LQFP144 package (YSS944-VZ, YSS943-VZ, and YSS940-VZ) [Note] “Dolby,” ”Dolby Pro Logic IIx,” and “AC-3” are trademarks of Dolby Laboratories. “DTS,” “DTS-ES,” “DTS 96/24,” and “DTS Neo:6” are trademarks of Digital Theater Systems, Inc. Applications • AV amplifiers for home theaters • Car audio systems |
Numéro de pièce similaire - YSS944 |
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Description similaire - YSS944 |
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