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Package Information

A.2.1 Register Control with DSP Interface

Table A-2summarizes the recommended power-on sequence for the PCM3793A. The shaded cells within the table indicate specific register settings that must be configured for the device to properly operate with a DSP interface.

Table A-2. Recommended Power-On Sequence for PCM3793A

 

REGISTER

 

STEP

SETTINGS

NOTE

 

 

 

1

–

Turn on all power supplies.(1)

2

4027h

Headphone amplifier L-ch volume (–6dB)(2)

3

4127h

Headphone amplifier R-ch volume (–6dB)(2)

4

4227h

Speaker amplifier L-ch volume (–6dB)(2)

5

4327h

Speaker amplifier R-ch volume (–6dB)(2)

6

4427h

Digital attenuator L-ch (–24dB)(2)

7

8(3)

9

10(3)

11

12(5)

13(5)

14

15

16

17

18

19

20

21

22

23

24

4527h

Digital attenuator R-ch (–24dB)(2)

4620h

DAC audio interface format (left-justified)(4)

4BC0h

Headphone detection enable and inverting polarity. Short and thermal detection enable.

5102h

ADC audio interface format (left-justified)(4)

5A10h

VCOM ramp up/down time control. PG1, PG2 gain control (0dB)

49E0h

DAC (DAL, DAR) and analog bias power up

5601h

Zero-cross detection enable

4803h

Analog mixer (MXL, MXR) power up

5811h

Analog mixer input (SW2, SW5) select

49FCh

Headphone amplifier (HPL, HPR, HPC) power up

4C03h

Speaker amplifier shut down release

4A01h

VCOM power up

523Fh

Analog front end (ADL, ADR, D2S, MCB, PG1, 2, 5, 6) power up

5711h

Analog input (MUX3, MUX4) select. Analog input (MUX1, MUX2) select

4F0Ch

Analog input L-ch (PG3) volume (0dB)(2)

500Ch Analog input R-ch (PG4) volume (0dB)(2)

– Any settings for other devices or wait time, 450ms(6) (7)

49FFh

Speaker amplifier (SPL, SPR) power up (5)

(1)VDD should be turn on prior to or simultaneously with the other power supplies. It is recommended to set register data with the system clock input after turning all power supplies on.

(2)Any level is acceptable for volume or attenuation. Level should be resumed by register data recorded when system power off.

(3)I2S: 4620h; Left-Justified: 4601h; Right-Justified: 4602h; DSP: 4603h.

(4)Audio interface format should be set to match the DSP or decoder being used.

(5)Between steps 12 and 13, add this value for slave configuration: 5400h. For master configuration, add: 5440h.

(6)The PCM3793A requires time for VCOM to reach the common level from GND level. The delay depends on the capacitor value for VCOM and the setting of register 125 PTM[1:0], RES[4:0]. The default setting is 450ms at VCOM = 4.7μs.

(7)The PCM3794A does not require this setting because it has no speaker output.

A.3 Package Information

Packaging information includes a thermal pad mechanical drawing and an example board layout. These examples are taken from the PCM3793A product data sheet (available for download at www.ti.com).

SBAU127 –July 2007

Reference .csv Files, Interfacing to DSPs, and Package Information

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Texas Instruments DEM-DAI3793A manual Register Control with DSP Interface, Package Information
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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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