Description
Wide Compatibility
Designed to work seamlessly with digital-to-analog converter styles, this board is a versatile addition to your setup.
Digital-to-Analog Converter
The CS42448 audio module serves as a reliable Digital-to-Analog Converter, delivering smooth and seamless audio transitions.
Versatile Input and Output
The board features 6 inputs and 8 outputs, providing flexibility for various audio and video applications.
High Sampling Rate
Experience crystal-clear audio with a sampling rate of 48-192, ensuring high-fidelity sound reproduction.
Advanced DSP Technology
Equipped with the advanced ADAU1452 DSP, this module offers superior processing capabilities for enhanced audio quality.
CS42448 -CODEC 6-in-8-out decoding board
AD1938-CODEC 4-in-8-out decoding board
Audio module development tool.
size：72mm*73mm*28 mm ±2 mm
Factory direct sales, high cost-effective hot selling products. Welcome to place orders for quality assurance.
It is recommended to purchase our emulation burner at the same time for development (USBI with 288 shell), and the package purchase will be more favorable. Materials include schematics and routines sent via email.
Due to the recent chip shortage, MCU_STM32F103C8T6 does not have a patch on the actual shipping board. The MCU itself has no program and can still work normally without a board. The AD1938_CODEC decoding board adds a microcontroller for soft control, which can set the sampling rate and audio interface type.
The on-board routine provides input and output IIS/SPDIF (off fiber/coaxial selection) interface (single ADAU1450-DSP board does not support SPDIF);
1. For the ADAU1466 series routines, the configuration page can freely select the communication method (SPI or I2C) between SIGMASTUDIO and the target board. The SPI mode address is: SPI 0x1 ADR0, the I2C address is: I2C 0x16 (118), and E2Prom is SPI 0x1 ADR0, no need to change.
2. Definition of the link method between USBi and the target board (ADAU1466 dsp board):
SPI communication method: USBi end 1/3/5/7/9 (CLK/CS/MISO/MOSI/GND) of the emulator respectively correspond to 5/4/3/2/1 of the target board (ADAU1466 dsp board) CN2. Just follow Arrange in order.
I2C communication method: USBi terminal 2/4/6 (GND/SCL/SDA) of the emulator correspond to 1/5/3 of CN2 of the target board (ADAU1466 dsp board) respectively.
3. SIP1 on the target board is used as an auto-start jumper, which is actually basically useless. There is no need to cancel auto-start, so you can throw away the jumper cap and try not to plug it into terminal 12.
4. The factory test routine is: ADAU1466 electrical splitting routine 192tdm.dspproj file, the matching AD1938 defaults to 192K/TDM audio transmission, 4 channels in and 8 channels out. If you need to change the sampling rate and audio interface mode, you can refer to the AD1938 board Note about jumpers, otherwise the sound will not be normal.
5. Beginners are recommended to use the CODEC decoding of CS42448, which supports 6 channels into 8 channels for output. It has a separate routine. The factory routine is the file 1452_cs42448_192.dspproj. In addition to higher indicators, the circuit is simple and stable, 48 -192 sampling rate takes all, no need to switch configurations, just concentrate on debugging DSP.
The factory setting is 192K_TDM format, OUT3/OUT4 are straight-through interfaces, and OUT1/OUT2 are stereo 2-way mode output interfaces.
S1 button input selection; the blue light flashes for SPDIF input, the red light indicates IN2 analog input. The green light indicates IN1 analog input.
S2 button preset EQ switching, a total of 10 EQ presets.
The S3 button super bass switch is useful in the electronic crossover subwoofer channel and is turned on by default;
The three-color LED flashes to display the input channel and working status respectively;
The STM32 microcontroller is reserved on the board. You can choose to use the microcontroller to control the DSP, leaving USB/uart/spi ports. It can also be used as a microcontroller development board.
Potentiometer ADC acquisition for volume control, LED driver example.
6 inputs and 8 outputs decoding board audio and video development board ADAU1466 DSP CS42448 audio module 48-192 sampling rate
Please purchase a single USBI simulation burner from other links in our store.
ADAU1466 is a high-performance SigmaDSP compact digital audio processor from Analog Devices (ADI), specifically designed for real-time audio processing. It is suitable for professional audio equipment, home audio systems, and automotive audio systems.
The core parameters of are as follows:
Youdaoplaceholder0 Processing capacity : 1.2V, 32-bit DSP core, operating frequency up to 294.912MHz, capable of executing 6144 SIMD instructions per sample at a sampling rate of 48kHz.
Youdaoplaceholder0 memory : 24,000-word program memory, 80,000-word parameter/data RAM.
Youdaoplaceholder0 audio I/O : 48-channel, 32-bit digital I/O, with a sampling rate up to 192kHz, supporting multiple audio interface formats such as I2S and TDM.
Youdaoplaceholder0 Packaging and operating environment : 72-pin LFCSP packaging, operating temperature range -40°C to +105°C.
This chip also features a rich array of audio interfaces, a flexible clock generator, and an integrated audio effect module, capable of efficiently handling complex audio algorithms.
The following is the ADAU1466+AD1938 board
The following is the ADAU1466+AD1938+USBI emulator set
The following is the ADAU1466+CS42448+USBI emulator set
The following are the dimensions. This diagram is only for reference dimensions.
1466 DSP 
AD1938 schematic diagram 
CS42448 schematic diagram
When purchasing the ADAU1466+CS42448 set, the CS42448 decoding board audio socket will be randomly dispatched in two colors. If you mind, please do not place an order. The quality and performance are the same, only the color is different.See the picture below
This product is a real photo and there may be color differences. For electronic products, due to technological upgrades or other reasons, the details and parameters of the pictures may have minor changes. However, the web page may not be updated in real time. This cannot be used as a reason for complaints about non-compliance with the description or quality for returns.
CS42448 Chip Introduction
108 dB 192 kHz 6-input, 8-output multi-channel codec
The CS42448 is a highly integrated audio codec designed to simplify the design of home theater and car audio systems. Audio products provide advanced multi-channel surround sound performance. The CS42448 supports the addition of up to eight single-ended or six differential audio input sources, and up to eight single-ended or differential output sources. Highly integrated, multiple audio channels can be passed to the DSP chip for audio processing without the need for external analog-to-digital (A/D) converters. The auxiliary serial input is available for two additional PCM (Pulse Code Modulation) data channels. The inputs are more powerful, enabling audio/video (A/V) receivers that can receive audio from multiple sources. The CS42448 eliminates clicks and pops caused by power switching. This IC is ideal for audio applications requiring wide dynamic range, negligible distortion and low noise.
AD1938 Chip Introduction
The AD1938 is a high-performance, single-chip codec with four built-in input analog-to-digital converters (ADCs) and eight single-ended output digital-to-analog converters (DACs), using Analog Devices' multi-bit sigma-delta (Σ- Δ) Patent architecture. It has an SPI port through which the microcontroller can adjust the volume and many other parameters.
Development materials available (including schematics and routines)
AliExpress Shopper –
I’m really amazed, what was promised has arrived. The documentation is also included, and everything works. I’m very satisfied with it.
AliExpress Shopper –
All received in good working conditions. tested with sigmastudio and worked as advertised. wonderful little board for exploring audio dsp. seller very rezponsive and provided required documentation by email. recommended.
AliExpress Shopper –
Perfect