YSS922
YSS922 is 96kHz DIR + Dolby Digital / Pro Logic / DTS decoder + Sub DSP manufactured by YAMAHA.
Features
DIR Block
- Sampling frequency: two ranges are available including; 32k to 48k Hz (normal rate) and 64k to 96k Hz (double rate)
- Provides master clock, 256fs, to DAC, ADC and other peripheral devices. The clock output can be controlled with various modes determined by register setting.
- Has a pin that indicates the double rate operation.
- Every channel status and user data can be read through the microprocessor interface.
- Has an output pin for interrupt that is activated by changing of the status information.
- Internal operation frequency: 25MHz
Main DSP Block
- Dolby Digital (AC-3) / Pro Logic and DTS decode
- High quality internal 24 bit DSP
- No external memory is required. (Memory for center and surround channel delay is included.)
- AC-3 Karaoke mode.
- Supports pression modes at AC-3 / DTS decoding.
- Pro Logic decoding for Dolby Digital 2 channels decoded signal as well as ordinary PCM signal.
- Reads Dolby Digital / DTS decode information through the microprocessor interface.
- Included de-emphasis filter for the PCM signal.
- Internal operation frequency: 30MHz
YAMAHA CORPORATION
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YSS922 CATALOG CATALOG No.: LSI-4SS922A1 2000.2
Sub DSP Block
- Capable of realizing various sound fields, such as simulation surround, output configuration and virtual surround by down-loading the programs.
- Adoption of the 32 bit floating point DSP assuring highly accurate processing.
- Up to 2.73 seconds delay at fs=48k Hz achievable by adding DRAM or SRAM externally.
- Internal operation frequency: 30MHz
Other Features
- Connectable to almost all ADC and DAC by making appropriate settings to the control register.
- Total of 16 general purpose input/output ports are available.
- 2 built-in PLL circuits for generation of operation clocks for DIR block and DSP...
