PCM2900

PCM2902

SLES035C − MARCH 2002 − REVISED MARCH 2007

www.ti.com

22

volume control is not supported. A request to the master volume is stalled and ignored. The built-in digital mute

controller can be manipulated by audio class specific request. A master mute control request is acceptable. A

request to an individual channel is stalled and ignored.

Interface #1

Interface #1 is the audio streaming data-out interface. Interface #1 has the following seven alternative settings.

Alternative setting #0 is the zero bandwidth setting. All other alternative settings are operational settings.

ALTERNATIVE

SETTING

DATA FORMAT

TRANSFER

MODE

SAMPLING RATE

(kHz)

00

Zero Bandwidth

01

16 bit

Stereo

2s complement (PCM)

Adaptive

32, 44.1, 48

02

16 bit

Mono

2s complement (PCM)

Adaptive

32, 44.1, 48

03

8 bit

Stereo

2s complement (PCM)

Adaptive

32, 44.1, 48

04

8 bit

Mono

2s complement (PCM)

Adaptive

32, 44.1, 48

05

8 bit

Stereo

Offset binary (PCM8)

Adaptive

32, 44.1, 48

06

8 bit

Mono

Offset binary (PCM8)

Adaptive

32, 44.1, 48

Interface #2

Interface #2 is the audio streaming data-in the interface. Interface #2 has the following 19 alternative settings.

Alternative setting #0 is the zero bandwidth setting. All other alternative settings are operational settings.

ALTERNATIVE

SETTING

DATA FORMAT

TRANSFER

MODE

SAMPLING RATE

(kHz)

00

Zero Bandwidth

01

16 bit

Stereo

2s complement (PCM)

Asynchronous

48

02

16 bit

Mono

2s complement (PCM)

Asynchronous

48

03

16 bit

Stereo

2s complement (PCM)

Asynchronous

44.1

04

16 bit

Mono

2s complement (PCM)

Asynchronous

44.1

05

16 bit

Stereo

2s complement (PCM)

Asynchronous

32

06

16 bit

Mono

2s complement (PCM)

Asynchronous

32

07

16 bit

Stereo

2s complement (PCM)

Asynchronous

22.05

08

16 bit

Mono

2s complement (PCM)

Asynchronous

22.05

09

16 bit

Stereo

2s complement (PCM)

Asynchronous

16

0A

16 bit

Mono

2s complement (PCM)

Asynchronous

16

0B

8 bit

Stereo

2s complement (PCM)

Asynchronous

16

0C

8 bit

Mono

2s complement (PCM)

Asynchronous

16

0D

8 bit

Stereo

2s complement (PCM)

Asynchronous

8

0E

8 bit

Mono

2s complement (PCM)

Asynchronous

8

0F

16 bit

Stereo

2s complement (PCM)

Synchronous

11.025

10

16 bit

Mono

2s complement (PCM)

Synchronous

11.025

11

8 bit

Stereo

2s complement (PCM)

Synchronous

11.025

12

8 bit

Mono

2s complement (PCM)

Synchronous

11.025

Interface #3

Interface #3 is the interrupt data-in interface. Alternative setting #0 is the only possible setting for interface #3.

Interface #3 constructs the HID consumer control device and reports the following three key statuses.