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)： 59/114頁
文件大小： 1224K
代理商： GS1582
GS1582 Data Sheet
40117 - 1 November 2007
59 of 114
The CLEAR_AUDIO bit in the host interface can be used to clear the FIFOs. When
asserted, this bit resets the FIFOs to the start-up state.
4.7.22 Audio Sample Distributions
4.7.22.1 525-line Audio Sample Distribution
This following sample distribution allows the embedding of 16 channels (4 audio
groups) of 24-bit sampled audio into the HANC of 525-line based video formats.
The sample distribution is established for group 1 and then offset by 1 line for each
subsequent group. The sample distribution is as follows (start line is 12):
{[3]
(10+G)
,([4],[3]
15
)
15
,[4],[3]
(11-G)
,[0],[3]
(3+G)
,([4],[3]
15
)
15
,[4/3],[3]
12
,[4],[3]
(4-G)
,[0]}
5
[#] = Number of samples / line
[4/3] = One line with either 3 or 4 samples depending on five-frame sequence
(#)
= Number of times to repeat the sequence. When this # is 0, no samples are
inserted
G = Audio group number from 1 to 4
{…}
5
= 5-frame sequence as shown in
Table 4-22
:
Table 4-23
,
Table 4-24
,
Table 4-25
, and
Table 4-26
show the audio sample
distributions for each of the four audio groups. Each distribution has 525 lines with
either 1602 or 1601 samples based on the frame number of the five-frame
sequence.
Table 4-21: Audio Buffer Pointer Offset Settings
OS_SEL[1:0]
Buffer Pointer Offset
00
26 samples (default)
01
12 samples
10
6 samples
Table 4-22: 5-frame Sequence Sample Distribution
Frame
Number of samples
1
1602
2
1601
3
1602
4
1601
5
1602
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