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AD1941YSTZ データシート(PDF) 1 Page - Analog Devices

部品番号 AD1941YSTZ
部品情報  SigmaDSP-TM Multichannel 28-Bit Audio Processor
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ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD1941YSTZ データシート(HTML) 1 Page - Analog Devices

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SigmaDSPTM Multichannel
28-Bit Audio Processor
Preliminary Technical Data
AD1941
Rev. PrE
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
16-channel digital audio processor
Accepts sample rates up to 192 kHz
28-bit × 28-bit multiplier with full 56-bit accumulator
Fully-programmable program RAM for custom
program download
Parameter RAM allows complete control of 1,024 parameters
Control port features safeload for transparent parameter
updates and complete mode and memory transfer control
Target/slew RAM for click-free volume control and dynamic
parameter updates
Double precision mode for full 56-bit processing
PLL for generating MCLK from 64 × fS, 256 × fS, 384 × fS, or
512 × fS clocks
Hardware-accelerated DSP core
21 kB (6,144 words) data memory for up to 128 ms of audio
delay at fs = 48 kHz
Flexible serial data port with I2S compatible, left-justified,
and right-justified serial port modes
8- and 16-channel TDM input/output modes
On-chip voltage regulator for compatibility with 3.3 V and
5 V systems
Programmable low power mode
Fast start-up and boot time from power on or reset
48-lead LQFP plastic package
APPLICATIONS
Automotive sound systems
Digital televisions
Home theater systems (Dolby Digital/DTS postprocessor)
Multichannel audio systems
Mini-component stereos
Multimedia audio
Digital speaker crossover
Musical instruments
In-seat sound systems (aircrafts/motor coaches)
FUNCTIONAL BLOCK DIAGRAM
VOLTAGE
REGULATOR
AD1940
28
× 28
DSP CORE
DATA FORMAT:
PLL
SERIAL
CONTROL
INTERFACE
SERIAL DATA/
TDM INPUTS
MASTER
CLOCK
INPUT
SPI I/O
RAM
ROM
SERIAL
DATA/
TDM
OUTPUTS
2
4
4
2
2
5.23 (SINGLE
PRECISION)
10.46 (DOUBLE
PRECISION)
Figure 1.
GENERAL DESCRIPTION
The AD1941 is a complete 28-bit, single-chip, multichannel
audio DSP for equalization, multiband dynamics processing,
delay compensation, speaker compensation, and image
enhancement. These algorithms can be used to compensate for
the real-world limitations of speakers, amplifiers, and listening
environments, resulting in a dramatic improvement of
perceived audio quality.
The signal processing used in the AD1941 is comparable to that
found in high end studio equipment. Most of the processing is
done in full, 56-bit double-precision mode, resulting in very
good low level signal performance and the absence of limit
cycles or idle tones. The dynamics processor uses a sophisti-
cated, multiple-breakpoint algorithm often found in high end
broadcast compressors.
The AD1941 is a fully-programmable DSP. Easy to use software
allows the user to graphically configure a custom signal
processing flow using blocks such as biquad filters, dynamics
processors, and surround sound processors. An extensive
control port allows click-free parameter updates, along with
readback capability from any point in the algorithm flow.
The AD1941’s digital input and output ports allow a glueless
connection to ADCs and DACs by multiple, 2-channel serial
data streams or TDM data streams. When in TDM mode, the
AD1941 can input 8 or 16 channels of serial data, and can
output either 8 or 16 channels of serial data. The input and
output port configurations can be individually set. The AD1941
is controlled on a 2-wire I2C bus.


同様の部品番号 - AD1941YSTZ

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同様の説明 - AD1941YSTZ

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