SAA7715 PHILIPS [NXP Semiconductors], SAA7715 Datasheet - Page 3

• Manufacturer Part Number: SAA7715
• Description: Digital Signal Processor
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
1
1.1
1.2
(1) Dolby — Available only to licensees of Dolby Laboratories
2001 May 07
24-bit Philips 70 MIPS DSP core (24-bit data path and
12/24-bit coefficient path)
1.5 kbyte of downloadable DSP program memory
(PRAM)
2 kbyte of DSP program memory (PROM)
2.5 kbyte of re-programmable DSP data memory
(XRAM)
512 byte of re-programmable DSP coefficient memory
(YRAM)
Four stereo digital serial inputs (8 channels) with
common BCK and WS. To these inputs the I
format or LSB-justified formats can be applied
One stereo bitstream DAC (2 channels) with 64 fold
oversampling and noise shaping
Selectable clock output (pin SYSCLK) for external slave
devices (512f
Four stereo digital serial outputs (8 channels) with
selectable I
Two SPDIF inputs combined with digital serial input
On-board WS_PLL generates clock for on-board DAC
and output pin SYSCLK
I
Programmable Phase-Locked Loop (PLL) derives the
clock for the DSP from the CLK_IN input
supply voltage only 3.3 V
All digital inputs are tolerant for 5 V input levels
Power-down mode for low current consumption in
standby mode
Optimized pinning for applications with other Philips
DACs (such as UDA1334, UDA1355 and UDA1328).
Dolby®
Smoothed volume control (without zipper noise)
Automatic Volume Levelling (AVL)
Dynamic bass enhancement
Ultra bass
Digital Signal Processor
2
40 to +85 C operating temperature range
C-bus controlled (including fast mode)
Licensing Corporation, San Francisco, CA94111, USA, from
whom licensing and application information must be obtained.
Dolby is a registered trade-mark of Dolby Laboratories
Licensing Corporation.
FEATURES
Hardware
Possible firmware
(1)
Pro Logic decoding
2
S-bus or LSB-justified format
s
to 128f
s
)
2
S-bus
3
2
Incredible surround
Incredible mono (Imono)
DPL virtualiser
Dolby digital virtualiser (DVD post-processing)
Dynamic compressor
Spectral enhancer
Equalizer with peaking/shelving filters
DC filters
Bass/treble control
Dynamic loudness
Tone/noise generator
Graphical spectrum analyser
Configurable Delay Unit (DLU)
Sound steering/elevation for CAR applications
Sample Rate Conversion (SRC).
As co-processor for a car radio DSP in a car radio
application for additional acoustic enhancements
(sound steering/sound elevation/signal processing)
Multichannel audio: in DVD and Home theatre
applications as post-processing device like signal
virtualisation (virtual 3D surround) and acoustic
enhancement, tone control, volume control and
equalizers
Multichannel decoding: Dolby Pro Logic and virtual
3D surround
PC/USB audio applications: stereo widening (Incredible
surround), sound steering, sound positioning and
speaker equalization.
APPLICATIONS
Preliminary specification
SAA7715H