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YSS944

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 ...

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YSS944: 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 ...

YSS944 Data Sheet

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Part Number:
YSS944
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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.


Application

• AV amplifiers for home theaters
• Car audio systems


Pinout

Connection Diagram


Specifications

Item   Min. Max. Unit
Power supply voltage 1 (3.3 V) VDD1 -0.5 4.6 V
AVDDR
AHVDD
AHVDDG
Power supply voltage 2 (1.2 V) VDD2 -0.5 1.68 V
DVDD
Input voltage1 Note 1) VI -0.5 5.5 V
Input voltage2 Note 2) V12 -0.5 4.6 V
Storage temperature TSTG -50 125
Condition: All GND pins (VSS, AVSSR, AHVSS, AHVSSG, and DVSS) are 0 V.
Note 1) Applies to input pins other than the X1 pin.
Note 2) Applies to the X1 pin.


Description

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).




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