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GS1582 Folha de dados(PDF) 46 Page - Gennum Corporation |
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GS1582 Folha de dados(HTML) 46 Page - Gennum Corporation |
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46 / 114 page ![]() GS1582 Data Sheet 40117 - 1 November 2007 46 of 114 4.7.9.2 HD Formats In HD mode, the control packets are inserted in the first line after the blanking line in the Luma channel in the first available space. Figure 4-16 shows the structure of the HD audio control packet as defined in SMPTE 299M. An audio control packet is multiplexed once per field in the luma channel of the video data stream. Table 4-9 lists descriptions of the individual audio control packet words. The audio core automatically generates certain audio control packet words. Figure 4-16: HD Audio Control Packet Structure RSRV 2 Reserved Words 200h Yes CS 1 Checksum. Calculates the sum of lower 9 bits of 22 words from DID –Yes Table 4-8: Audio Control Packet Word Descriptions (Continued) Name No. of Words Description Data Auto-Generation Table 4-9: Audio Control 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 1E3h 2E2h 2E1h 1E0h See Table 4-10 DBN 1 Data Block Number 200h Yes DC 1 Data Count 10Bh Yes AF 1 Audio Frame Number – Yes RATE 1 Sampling Frequency – Yes ACT 1 Active Channel – ACT[8:1] setting DELA0-3 3 Ch1/2 Delay Data – 27-bit Host Interface setting User Data Words |
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