參數(shù)資料
型號： GS1582
廠商： Gennum Corporation
英文描述： IC,MC14490P
中文描述： 多速率的電纜驅(qū)動器，音頻多路復(fù)用器和ClockCleaner⑩串行
文件頁數(shù)： 45/114頁
文件大?。?/td> 1224K
代理商： GS1582
GS1582 Data Sheet
40117 - 1 November 2007
45 of 114
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.
Figure 4-15: SD Audio Control Packet Structure
Table 4-8: 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
1EFh
2EEh
2EDh
1ECh
See
Table 4-10
DBN
1
Data Block Number
Repeat 1-255
Yes
DC
1
Data Count
–
Yes
AF1-2
1
Ch1/2 Audio Frame Number
–
Yes
AF3-4
1
Ch3/4 Audio Frame Number
–
Same as AF1-2
RATE
1
Sampling Frequency
–
Yes
ACT
1
Active Channel
–
ACT[8:1] setting
DELA0
-3
3
Ch1/Ch1&2 Delay Data
–
27-bit Host Interface
setting
DELB0
-3
3
Ch3/Ch3&4 Delay Data
–
27-bit Host Interface
setting
DELC0
-3
3
Ch2 Delay Data
–
27-bit Host Interface
setting
DELD0
-3
3
Ch4 Delay Data
–
27-bit Host Interface
setting
A
User Data Words
1
D
D
D
A
D
D
C
R
A
A
D
D
R
R
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