ADAU1450WBCPZ-RL View Datasheet(PDF) - Analog Devices
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ADAU1450WBCPZ-RL Datasheet PDF : 180 Pages
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ADAU1452/ADAU1451/ADAU1450
Data Sheet
GENERAL DESCRIPTION
The ADAU1452/ADAU1451/ADAU1450 are automotive qualified
audio processors that far exceed the digital signal processing
capabilities of earlier SigmaDSP® devices. The restructured
hardware architecture is optimized for efficient audio processing.
The audio processing algorithms are realized in sample-by-sample
and block-by-block paradigms that can both be executed simul-
taneously in a signal processing flow created using the graphical
programming tool, SigmaStudio™. The restructured digital signal
processor (DSP) core architecture enables some types of audio
processing algorithms to be executed using significantly fewer
instructions than were required on previous SigmaDSP
generations, leading to vastly improved code efficiency.
The 1.2 V, 32-bit DSP core can run at frequencies of up to
294.912 MHz and execute up to 6144 instructions per sample at
the standard sample rate of 48 kHz. However, in addition to
industry standard rates, a wide range of sample rates are
available. The integer PLL and flexible clock generator hardware
can generate up to 15 audio sample rates simultaneously. These
clock generators, along with the on board asynchronous sample
rate converters (ASRCs) and a flexible hardware audio routing
matrix, make the ADAU1452/ADAU1451/ADAU1450 ideal
audio hubs that greatly simplify the design of complex multirate
audio systems.
The ADAU1452/ADAU1451/ADAU1450 interface with a wide
range of ADCs, DACs, digital audio devices, amplifiers, and
control circuitry, due to their highly configurable serial ports,
S/PDIF interfaces (on the ADAU1452 and ADAU1451), and
multipurpose input/output pins. They can also directly interface
with PDM output MEMS microphones, thanks to integrated
decimation filters specifically designed for that purpose.
Table 1. Product Selection Table
Device
Number
Data Memory Program Memory
(kWords)
(kWords)
ADAU1452 40
8
ADAU1451 16
8
ADAU1450 8
8
DSP Core
Frequency
294.912 MHz
294.912 MHz
147.456 MHz
Independent slave and master I2C/SPI control ports allow the
ADAU1452/ADAU1451/ADAU1450 not only to be programmed
and configured by an external master device, but also to act as
masters that can program and configure external slave devices
directly. This flexibility, combined with self boot functionality,
enables the design of standalone systems that do not require any
external input to operate.
The power efficient DSP core executes full programs while
consuming only a few hundred milliwatts (mW) of power and
can run at a maximum program load while consuming less than
a watt, even in worst case temperatures exceeding 100°C. This
relatively low power consumption and small footprint make the
ADAU1452/ADAU1451/ADAU1450 ideal replacements for large,
general-purpose DSPs that consume more power at the same
processing load.
DIFFERENCES BETWEEN THE ADAU1452,
ADAU1451, AND ADAU1450
The three variants of this device are differentiated by memory,
DSP core frequency, availability of S/PDIF interfaces, and ASRC
configuration. A detailed summary of the differences is listed in
Table 1.
Because the ADAU1450 does not contain an S/PDIF receiver or
transmitter, the SPDIFIN and SPDIFOUT pins are nonfunctional.
Also, the settings of any registers related to the S/PDIF input or
output in the ADAU1450 do not have any effect on the operation
of the device.
Likewise, because the ADAU1450 does not contain ASRCs, the
settings of any registers related to the ASRCs in the ADAU1450
do not have any effect on the operation of the device.
S/PDIF Input and
Output
Available
Available
Not available
ASRC Configuration
16 channels (8 rates × 2 channels per rate)
16 channels (8 rates × 2 channels per rate)
No ASRCs included
Rev. C | Page 4 of 180
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