YSS950 Datasheet, PDF (1/30 Pages) YAMAHA CORPORATION – DAP1 Digital Audio Processor

YSS950
DAP1
Digital Audio Processor


■ Outline
The YSS950 (DAP1) is a DSP (Digital Signal Processor) for sound field processing, which features a
high-speed/ high-precision 32-bit floating point DSP.
■ Features
{ 32-bit floating point DSP achieves high-speed/high-precision operations
• Operation frequency: Approximately 166 MHz
• Data bus width: 32 bits (24-bit mantissa, 8-bit exponent)
• Multiplier/adder: 32 bits × 32 bits + 55 bits → 55 bits (47-bit mantissa, 8-bit exponent)
{ 48 KB (12 Kword) preset command code firmware area
{ 24 KB (6 Kword) download command code firmware area (maximum)
{ 104 KB (26 Kword) data RAM area (maximum)
{ High-speed command code/coefficient data firmware download (burst transfer)
{ Download coefficients data firmware without any interruption of sound (runtime transfer)
{ Firmware’s placement order can be changed
{ Firmware’s number of execution channels can be changed (up to 16 channels)
{ Multiple firmware calls are enabled
{ Audio I/O
• 32 bits × 16 channels, TDM
• Fixed point decimal format and floating point decimal format (IEEE Standard 754, two’s complement)
• Sampling frequency range is 32 to 192 kHz
• Audio clock division/switch
• Input/output muting
• Input/output channel switching
{ External memory not required
{ General I/O ports (4)
{ On-chip PLL
{ Power supply voltage: 1.2 V (core), 3.3 V (pin)
{ Low power consumption: Approximately 130mW (typical value)
{ Si-gate CMOS process
{ Lead-free 64-pin SQFP package (YSS950-SZ)
■ Applications
{ Home theater systems
{ Car audio


YSS950 CATALOG
CATALOG No.: LSI-4SS950A22
2006.10