Features and Benefits
- Qualified for automotive applications
- Fully programmable audio DSP for enhanced sound processing
- Features SigmaStudio, a proprietary graphical programming tool for the development of custom signal flows
- Up to 294.912 MHz, 32-bit SigmaDSP core at 1.2 V
- Up to 24 kWords of program memory
- Up to 80 kWords of parameter/data RAM
- Up to 6144 SIMD instructions per sample at 48 kHz
- Up to 1600 ms digital audio delay pool at 48 kHz
- Audio I/O and routing
- 4 serial input ports, 4 serial output ports
- 48-channel, 32-bit digital I/O up to a sample rate of 192 kHz
- Flexible configuration for TDM, I2S, left and right justified formats, and PCM
- 8 stereo ASRCs from 1:8 up to 7.75:1 ratio and 139 dB dynamic range
- Stereo S/PDIF input and output at 192 kHz
- 4 PDM microphone input channels
- Multichannel, byte addressable TDM serial ports
- Clock oscillator for generating master clock from crystal
- Integer PLL and flexible clock generators
- Integrated die temperature sensor
- I2C and SPI control interfaces (both slave and master)
- Standalone operation
- Self boot from serial EEPROM
- 8-channel, 10-bit SAR auxiliary control ADC
- 26 multipurpose pins for digital controls and outputs
- On-chip regulator for generating 1.2 V from 3.3 V supply
- 88-lead, 12 mm × 12 mm LFCSP package with 5.3 mm exposed pad
- Temperature range: −40°C to +105°C
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.
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 simultaneously. 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.
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 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.
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.
- Automotive audio processing
- Head units
- Distributed amplifiers
- Rear seat entertainment systems
- Trunk amplifiers
- Commercial and professional audio processing
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
This board is suitable for the evaluation of, and software development for, the ADAU1467 and ADAU1463 SigmaDSP® processors. Note that the ADAU1467 and the ADAU1463 are functionally identical; however, the ADAU1467 has more program and data memory than the ADAU1463. When using this evaluation board to evaluate the ADAU1463, select the ADAU1463 block (see the Setting Up Communications in SigmaStudio section) rather than the ADAU1467, as shown in Figure 16. Performing this action informs the compiler to limit the amount of memory allocated to match the ADAU1463. All other procedures and instructions in this user guide are identical for the ADAU1463 and ADAU1467.
This evaluation board provides access to the digital serial audio ports of the ADAU1467. Four analog inputs and eight analog outputs are provided by the AD1937 codec included in the evaluation kit. Switches enable the evaluation of alternate features provided by many of the pins with multiplexed functionality, and numerous headers provide access to serial audio ports and the master and slave control ports. These selectable modes and headers make the EVAL-ADAU1467Z well suited to prototyping larger application circuits, as well as initial device evaluation. The ADAU1467 core is programmed using Analog Devices, Inc., SigmaStudio® software, which interfaces to the evaluation board via a USB interface (USBi). The on-board, electronically erasable programmable read only memory (EEPROM) can be programmed for self boot mode. The evaluation board is powered by a 6 V dc supply, which is regulated to the voltages required on the board. The printed circuit board (PCB) is a 4-layer design with a ground plane and a power plane on the inner layers. The evaluation board includes connectors for external analog inputs and outputs and optical Sony/Philips Digital Interface (S/PDIF) interfaces. The master clock is provided by the integrated oscillator circuit and the on-board 12.288 MHz passive crystal.
For full details, see the ADAU1467 and AD1937 data sheets, which must be used in conjunction with this user guide when using the evaluation board.
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