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GS1582 Datasheet(PDF) 42 Page - Gennum Corporation |
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GS1582 Datasheet(HTML) 42 Page - Gennum Corporation |
42 / 114 page GS1582 Data Sheet 40117 - 1 November 2007 42 of 114 4.7.8 Audio Data Packets 4.7.8.1 SD Formats Figure 4-12 shows the structure of the SD audio data packet as defined in SMPTE 272M. Table 4-5 lists the descriptions of the audio data packet words. The audio core automatically generates certain audio data packet words, as shown in Table 4-5. Figure 4-12: SD Audio Data Packet Structure Figure 4-13 shows the structure of the extended audio data packets as defined in SMPTE 272M. Table 4-6 lists the descriptions of the extended audio data packet words. The audio core automatically generates certain audio data packet words. The extended audio data packet is embedded immediately after the audio data packet with same group DID. Audio Sample Words X X+1 X+2 X X+1 X+2 X X+1 X+2 X X+1 X+2 X X+1 X+2 X X+1 X+2 Table 4-5: Audio Data Packet Word Descriptions Name No. of Words Description Data Auto-Generation ADF 3 Ancillary Data Flag 000h 3FFh 3FFh Yes DID 1 Audio Group Data ID 2FFh 1FDh 1FBh 2F9h See Table 4-10 DBN 1 Data Block Number Repeat 1-255 Yes DC 1 Data Count – Yes CH1 4 Channel 1 ancillary data words – CH2 4 Channel 2 ancillary data words – CH3 4 Channel 3 ancillary data words – CH4 4 Channel 4 ancillary data words – CS 1 Checksum – Yes |
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