GS1503B Gennum Corporation, GS1503B Datasheet - Page 39

• Manufacturer Part Number: GS1503B
• Description: Hd Embedded Audio Codec
• Manufacturer: Gennum Corporation

4.10 Audio Control Packets
4.10.1 Audio Control Packet Structure
Video Signal before GS1503B (with space between EAV and existing Audio Data Packets)
(200 h )
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The GS1503B assumes that the ancillary data space from the first blanking
location to the SAV contains no ancillary data packets. Existing ancillary data
packets must be contiguous from the beginning of the HANC space or the
GS1503B will overwrite existing packets with blanking before multiplexing new
packets. See
Figure 4-19: Insertion of Audio Groups 3 & 4 with space between EAV and audio
Figure 4-20
299M. An audio control packet is multiplexed once per field in the Luma channel of
the video data stream.
packet words. The GS1503B will automatically generate certain audio control
packet words.
Figure 4-20: Audio Control Packet Structure
Proprietary and Confidential
Video Signal after GS1503B Insertion of Audio Groups 3 & 4 (CASCADE = 1)
shows the structure of the audio control packet as defined in SMPTE
Figure
4-19.
Table 4-29
37953 - 0
User Data Words
lists descriptions of the individual audio control
August 2006
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GS1503B Data Sheet
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