Digital Audio Interface (J51)

2.5 Digital Audio Interface (J51)

The digital audio interface contains digital audio signal data (I2S), clocks etc. Please see the TAS5066 data manual for signal timing and details not ex- plained in this document.

Table 2−7. J51 Pin Description

Pin Number

Net-Name at Schematics

Description

 

 

 

1

GND

Ground

 

 

 

2

MCLK

Master clock input. Low jitter system clock for PWM generation

 

 

and reclocking.

 

 

Ground connection from source to TAS5066 must be a low im-

 

 

pedance connection.

 

 

 

3

GND

Ground

 

 

 

4

SDIN1

I2S data 1, channels 1 and 2

 

 

 

5

SDIN2

I2S data 2, channels 3 and 4

 

 

 

6

SDIN3

I2S data 3, channels 5 and 6

 

 

 

7−9

Reserved

 

 

 

10

GND

Ground

 

 

 

11

SCLK

I2S bit clock

 

 

 

12

GND

Ground

 

 

 

13

LRCLK

I2S left-right clock

 

 

 

14

GND

Ground

 

 

 

15

Reserved

 

 

 

16

GND

Ground

Table 2−8. Clock Rates

Speed

TAS5066 System

Sample

LRCLK

SCLK (64xFS)

MCLK

 

Control Register

Frequency

 

 

 

 

0 (x02h)

(FS)

 

 

 

Normal speed

D7 = 0

32 kHz

32.0 kHz

2.0480 MHz

8.1920 MHz

MCLK = 256xFS

D6 = 0

44.1 kHz

44.1 kHz

2.8224 MHz

11.2896 MHz

 

 

48 kHz

48.0 kHz

3.0720 MHz

12.2880 MHz

 

 

 

 

 

 

Double speed

D7 = 0

64 kHz

64.0 kHz

4.0960 MHz

16.3840 MHz

MCLK = 256xFS

D6 = 1

88 kHz

88.2 kHz

5.6448 MHz

22.5792 MHz

 

 

96 kHz

96.0 kHz

6.1440 MHz

24.5760 MHz

 

 

 

 

 

 

Quad speed

D7 = 1

176 kHz

176.4 kHz

11.2896 MHz

22.5790 MHz

MCLK = 128xFS

D6 = 0

192 kHz

192.0 kHz

12.2880 MHz

24.5760 MHz

System Interfaces

2-7

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Texas Instruments TAS5066PAG manual Digital Audio Interface J51, 7. J51 Pin Description, 8. Clock Rates, Lrclk, Mclk

TAS5066PAG specifications

The Texas Instruments TAS5066PAG is a highly efficient Class D audio amplifier designed for high-performance audio applications. Known for its advanced technology and robust features, it is part of a series that is widely used in home audio systems, professional sound equipment, and automotive audio devices.

One of the standout features of the TAS5066PAG is its ability to deliver high power output while maintaining low distortion levels. It is capable of providing up to 300W per channel at 4 ohms, making it a powerful solution for driving high-performance loudspeakers. With a total harmonic distortion plus noise (THD+N) rating as low as 0.01%, the device assures clean and clear audio reproduction, which is critical in high-fidelity audio systems.

The TAS5066PAG utilizes a digital input mechanism that supports various audio formats, including I2S and PCM, which allows for versatile integration with various digital audio sources. This feature streamlines the design process for system builders and reduces power consumption by eliminating the need for multiple digital-to-analog converters.

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