Analog Devices Inc. 亚德诺半导体 ADAU145x SigmaDSP 数字音频处理器
亚德诺半导体 ADAU1452/ADAU1451/ADAU1450 SigmaDSP 数字音频处理器是适用于汽车应用的音频处理器，其数字信号处理能力远超之前的 SigmaDSP®器件。其硬件架构经过重构，针对高效音频处理进行了优化。音频处理算法采用逐样本和逐模块范式实现，它们可在信号处理流程中同时执行，方法是使用图形编程工具 SigmaStudio™。与前几代 SigmaDSP 所需的指令相比，全新数字信号处理器(DSP)内核架构能以大幅精简的指令执行某类音频处理算法，从而极大地改善代码效率。能效高的 DSP 核心执行整个程序时仅消耗几百毫瓦功率，并能在消耗小于一瓦特功率时满程序负载运行，即使处在超过 100°C 的最差温度下也是如此。这样的较低功耗和小尺寸，使得 ADAU1452/ADAU1451/ADAU1450 成为在同等处理负载下需消耗更大功率的大型、通用型 DSP 的理想替代产品。
Differences Between the ADAU1452, ADAU1451, and ADAU1450
The three variants of this device are differentiated by the following.
• Memory
• DSP core frequency
• Availability of S/PDIF interfaces
• ASRC configuration
Because the ADAU1450 does not include 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.
Additionally, 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.
特性
- 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 294.912MHz, 32-bit SigmaDSP core at 1.2VUp to 6144 SIMD instructions per sample at 48kHz
- Up to 40k Words of parameter/data RAM
- Up to 800ms digital audio delay pool at 48kHz
- 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 192kHz
- Flexible configuration for TDM, I²S, left and right justified formats, and PCM
- Up to 8 stereo ASRCs from 1:8 up to 7.75:1 ratio and 139dB DNR
- Stereo S/PDIF input and output (not on the ADAU1450)
- Four 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
- 6-channel, 10-bit SAR auxiliary control ADC
- 14 multipurpose pins for digital controls and outputs
- On-chip regulator for generating 1.2V from 3.3V supply
- 72-lead, 10mm × 10mm LFCSP package with 5.3mm exposed pad
- Temperature range: −40°C to +105°C
