GS1582-IBE3 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

GS1582-IBE3

Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner™

Semtech Corporation 

4.7.9 Audio Control Packets

4.7.9.1 SD Formats

In SD mode, the control packets are inserted in the first line after the blanking line, and

following the audio data packets.

Figure 4-15 shows the structure of the SD audio control packet as defined in SMPTE

272M. An audio control packet is multiplexed once per field in the video data stream.

Table 4-8 lists descriptions of the audio control packet words. The audio core

automatically generates certain audio control packet words.

User Data Words

Figure 4-15: SD Audio Control Packet Structure

Table 4-8: Audio Control Packet Word Descriptions

Name

ADF

No. of

Words

3

Description

Ancillary Data Flag

DID

1

Audio Group Data ID

DBN

1

DC

1

AF1-2

1

AF3-4

1

RATE

1

ACT

1

DELA0-

3

3

DELB0-

3

3

DELC0-

3

3

Data Block Number

Data Count

Ch1/2 Audio Frame Number

Ch3/4 Audio Frame Number

Sampling Frequency

Active Channel

Ch1/Ch1&2 Delay Data

Ch3/Ch3&4 Delay Data

Ch2 Delay Data

Data

000h

3FFh

3FFh

1EFh

2EEh

2EDh

1ECh

Repeat

1-255

–

–

–

–

–

–

–

–

Auto-Generation

Yes

See Table 4-10

Yes

Yes

Yes

Same as AF1-2

Yes

ACT[8:1] setting

27-bit Host

Interface setting

27-bit Host

Interface setting

27-bit Host

Interface setting

GS1582 Multi-Rate Serializer with Cable Driver, Audio

Multiplexer and ClockCleanerTM

Data Sheet

40117 - 4

December 2011

46 of 115

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