ADAU1463/ADAU1467
Data Sheet
GENERAL DESCRIPTION
The ADAU1463/ADAU1467 are automotive qualified audio
processors that far exceed the digital signal processing
capabilities of earlier SigmaDSP® devices. They are pin and
register compatible with each other, as well as with the
ADAU1450/ADAU1451/ADAU1452 SigmaDSP processors.
The restructured hardware architecture is optimized for
efficient audio processing. The audio processing algorithms
support a seamless combination of stream processing (sample
by sample), multirate processing, and block processing paradigms.
The SigmaStudio® graphical programming tool enables the
creation of signal processing flows that are interactive, intuitive,
and powerful. The enhanced 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.
run serial ports at high speed, and enables systems with additional
serial audio peripherals. These expanded serial audio ports, along
with the clock generators, the on-board asynchronous sample rate
converters (ASRCs), and a flexible hardware audio routing matrix
make the ADAU1463/ ADAU1467 ideal audio hubs that greatly
simplify the design of complex, multirate audio systems.
The ADAU1463/ADAU1467 interface with a wide range of
analog-to-digital converters (ADCs), digital-to-analog converters
(DACs), digital audio devices, amplifiers, and control circuitry
with highly configurable serial ports, I2C, serial peripheral
interface (SPI), Sony/Philips Digital Interconnect Format
(S/PDIF) interfaces, and multipurpose I/O pins. Dedicated
decimation filters can decode the pulse density modulation
(PDM) output of up to four MEMS microphones.
Independent slave and master I2C/SPI control ports allow the
ADAU1463/ADAU1467 to be programmed and controlled by
an external master device such as a microcontroller, and to
program and control slave peripherals directly. Self boot
functionality and the master control port enable complex
standalone systems.
The 1.2 V, 32-bit DSP core can run at frequencies of up to
294.912 MHz and execute up to 6144 single instruction, multiple
data (SIMD) instructions per sample at the standard sample rate
of 48 kHz. Powerful clock generator hardware, including a flexible
phase-locked loop (PLL) with multiple fractional integer outputs,
supports all industry standard audio sample rates. Nonstandard
rates over a wide range can generate up to 15 sample rates simul-
taneously. These clock generators, along with the on-board
asynchronous sample rate converters (ASRCs) and a flexible
hardware audio routing matrix, make the ADAU1463/ADAU1467
ideal audio hubs that greatly simplify the design of complex
multirate audio systems.
Note that throughout this data sheet, multifunction pins, such
as SDATAIO4/MP20, are referred to either by the entire pin
name or by a single function of the pin, for example, MP20,
when only that function is relevant.
DIFFERENCES BETWEEN THE ADAU1463 AND
ADAU1467
The two variants of this device are differentiated by memory
and DSP core frequency. A detailed summary of the differences
is listed in Table 1.
The ADAU1463/ADAU1467 have four input serial ports and
four output serial ports. Each device has an asynchronous clock
domain capable of operating as either a bit clock and frame sync
master or slave. Each of the serial ports supports multiple data
lines. The eight SDATAIOx pins each can be associated with any
of the four input or four output serial ports. The use of assignable
data pins allows a serial port to transmit or receive additional
channels of audio data using a single bit clock and frame clock.
Each of the supplemental data pins can carry from two to eight
channels of serial audio. This flexible configuration provides
more channels of audio input/output (I/O) without the need to
Table 1. Product Selection Table
Data
Memory
(kWords)
Program
Memory
(kWords)
DSP Core
Frequency
(MHz)
Device
ADAU1463WBCPZ300
ADAU1463WBCPZ150
ADAU1467WBCPZ300
48
48
80
16
16
24
294.912
147.456
294.912
Rev. A | Page 4 of 207
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