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參數(shù)資料
| 型號(hào)： | GS1582-IBE3 |
| 廠商： | Gennum Corporation |
| 英文描述： | IC,MOT,MC145026P, DIP-16, ENCODER 9 LINE SIMPLEX |
| 中文描述： | 多速率的電纜驅(qū)動(dòng)器，音頻多路復(fù)用器和ClockCleaner⑩串行 |
| 文件頁數(shù)： | 62/114頁 |
| 文件大小： | 1224K |
| 代理商： | GS1582-IBE3 |
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GS1582 Data Sheet
40117 - 1 November 2007
62 of 114
4.7.22.3 Synchronous Audio Sample Distributions
Table 4-31
lists the audio sample distributions for synchronous audio at all the
video frame rates supported by the GS1582.
4.7.23 Audio Mute
When the AUDIO_MUTEn bits of the host interface are set HIGH, the embedded
audio sample data will be set to all zeros (null audio packets). To set all the
embedded audio channels to mute, set the host interface AUDIO_ALL bit HIGH.
Refer to
Section 4.13.3
for GS1582 status and configuration registers.
4.8 Ancillary Data Insertion
Horizontal or vertical ancillary data words may be inserted on up to four different
lines per video frame. In order to insert HANC data, the ANC_TYPE bit in the host
interface, must be set LOW. VANC data can be inserted by setting the ANC_TYPE
bit in the host interface HIGH. By default, at power up, HANC data insertion is
selected.
The user must write the ancillary data words to be inserted, the line number for the
insertion, and the total number of words to be inserted to the designated registers
in the host interface. At power up, or after system reset, all ANC data insertion line
numbers and total number of words default to zero.
All data words including the ancillary packet ADF, DBN, DC, DID, SDID, and
CHECKSUM (placeholder) must be provided. The user provided CHECKSUM
word is a placeholder. The correct value will be calculated and inserted
automatically.
Two modes of operation are provided – separate line mode and concatenated
mode. By default, at power up or after system reset, separate line operating mode
is selected.
The GS1582 ancillary data insertion provides no error checking or correction. The
provided ancillary data must be fully SMPTE compliant.
Table 4-31: Synchronous Audio Sample Distributions
Frame Rate (fps)
Samples per Video Frame
30
1600/1
29.97
8008/5
25
1920/1
60
800/1
59.94
4004/5
24
2000/1
23.98
2002/1
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