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Master Mode with Audio Precision SYS-2722

5.2Master Mode with Audio Precision SYS-2722

To enable the DEM-DAI3793A/3794A EVM motherboard for use in Master mode, the path of the S/PDIF input to the PCM3793A through DIR is not available for use. LRCK and BCK change the respective output states at the PCM3793A side in master mode; the respective jumpers of R-BCK, R-LRCK, and RX-DATA should be removed from CN305 to avoid conflict between the input and output of these clocks.

Furthermore, in this situation, DIN to the PCM3793A is also invalid because DIR LC89052T does not receive clocks (LC89052T cannot work in slave mode). Therefore, any analog output from the DAC is invalid because there is no data input.

However, in this configuration, users can confirm master mode operation of both LRCK and BCK from PCM3793A with a digital oscilloscope. Users can easily identify master mode without the use of other external equipment such as the PSIA-2722 analyzer.

The PCM3793A has no integrated internal PLL. However, the clock manager function can provide LRCK (fS) and BCK in master mode, as described in Figure 5-3.

U302

CN302

U301

CN301

 

 

SCKI

Clock

 

 

 

 

 

 

 

 

Manager

 

SW001

DIR:LC89052T￿

BCK

ADC

DAC

DIN

AudioInterface￿

 

 

 

LRCK

 

 

SW301

DIT:￿DIT4096

DOUT

 

 

 

 

 

 

 

 

PCM3793A

 

 

 

 

Daughter￿card￿#2

 

Daughter￿card￿#1

 

 

 

 

Isolated￿by

 

 

 

 

CN305

 

Figure 5-3. Master Mode Configuration With SYS-2722

Refer to the jumper combination shown in Figure 5-4to put the DEM-DAI3793A/3794A EVM motherboard into master mode configuration.

52

Evaluation and Measurements

SBAU127 –July 2007

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Texas Instruments DEM-DAI3793A manual Master Mode with Audio Precision SYS-2722, Master Mode Configuration With SYS-2722
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DEM-DAI3793A specifications

The Texas Instruments DEM-DAI3793A is a versatile digital-to-analog converter (DAC) evaluation module designed for assessing the performance and capabilities of TI's DACs in various applications. This module features the high-performance DAC3793, which is widely recognized for its precision and flexibility, making it an ideal choice for audio, industrial automation, and communication systems.

One of the standout features of the DEM-DAI3793A is its ability to support a 16-bit resolution. This high resolution enables the module to provide fine granularity in signal representation, ensuring that even the most subtle changes in the input signal are accurately reflected in the output. The DAC3793 also boasts a high sampling rate, which is crucial for applications that require rapid signal processing and real-time data conversion.

The module incorporates advanced technologies such as dynamic element matching and integrated circuitry to minimize distortion and noise. These technologies are crucial for achieving high-fidelity audio playback and improving overall system performance. Additionally, the DEM-DAI3793A is designed to minimize power consumption while maintaining exceptional performance levels, making it suitable for battery-operated devices and energy-conscious applications.

Another significant characteristic of the DEM-DAI3793A is its ease of integration with various development environments. The evaluation module supports both hardware and software interfacing, allowing engineers to quickly prototype and test their designs. It comes equipped with a USB interface for seamless connectivity with computers, along with supporting software tools that facilitate the configuration and testing of the DAC's functionalities.

The DEM-DAI3793A is also designed with a robust set of output options, including differential and single-ended outputs. This flexibility allows for compatibility with a wide range of amplification and filtering circuits. Furthermore, the evaluation module is equipped with convenient power supply options, enabling it to operate in various settings without the need for extensive modifications.

In conclusion, the Texas Instruments DEM-DAI3793A is an exceptional evaluation module that showcases the capabilities of the DAC3793. With its high resolution, advanced technologies, ease of integration, and flexible output options, it serves as an indispensable tool for engineers and developers working on high-performance audio and data processing applications.
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