DIT4192

9

SBOS229B

www.ti.com

INPUT

FUNCTION

COPY

Copy Status

L

Generation Status

COPY

L

Status

0

0

Consumer Mode, PRO = 0, COPY = 0, L = 0

0

1

Consumer Mode, PRO = 0, COPY = 0, L = 1

1

0

Consumer Mode, PRO = 0, COPY = 1, L = 0

1

1

Professional Mode, PRO = 1, No Copy Protection

AUDIO

Audio Data Status

AUDIO

Status

0

Digital (or Linear PCM) Audio Data

1

Non-Audio or Encoded Audio Data

EMPH

Pre-Emphasis Status

EMPH

Status

0

Pre-emphasis bits are set to indicate 50/15

µs Pre-emphasis has been applied.

1

Pre-emphasis bits are set to indicate that no Pre-emphasis has been applied.

TABLE VI. Channel Status Data Input for Hardware Mode with CSS = 0.

FIGURE 5. C, U, and V Data Timing.

USER AND VALIDITY DATA INPUT

The user data bits in the AES-3 data stream allow for a

convenient way to transfer user-defined or application spe-

cific data to another device containing an AES-3 receiver.

The U input (pin 27) is used in both Software and Hardware

mode to input the user data in a serial fashion. Figure 5

shows the U input timing diagram.

Validity data is used to indicate that a sample is error-free

audio data, or that the sample is defective and is not suitable

for further processing. In Software mode, the VAL bit in

Hardware mode, the V input (pin 26) is used to input the

validity data in serial fashion. Refer to Figure 5 for V input

timing for Hardware Mode.

When VAL or V = 0, this indicates that the audio data is valid

and suitable for further processing. When VAL or V = 1, then

the audio sample is defective and should not be used.

Frame 191 or 383

Frame 0

Block Start

BLS

(Input)

BLS

(Output)

C, U, or V

Data

NOTE: (1) Assumes ISYNC = 0.

t

CUVS

t

CUVH

Ch B

Data

Ch A

Data

Ch B

Data

Ch A

Data

192nd or 384th