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): 42/114頁
文件大?。?/td> 1224K
代理商: GS1582
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.
A
Audio Sample Words
1
D
D
D
C
C
C
C
C
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
C
C
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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