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參數資料
| 型號： | GS1582 |
| 廠商： | Gennum Corporation |
| 英文描述： | IC,MC14490P |
| 中文描述： | 多速率的電纜驅動器，音頻多路復用器和ClockCleaner⑩串行 |
| 文件頁數： | 40/114頁 |
| 文件大小： | 1224K |
| 代理商： | GS1582 |
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GS1582 Data Sheet
40117 - 1 November 2007
40 of 114
4.7.5 Arbitrary, SMPTE 352M & EDH Packet Detect
The audio multiplexer detects the presence of any arbitrary data packets. If
present, these packets will be removed and stored for re-insertion after audio
packets have been embedded. If there is insufficient HANC space available, the
arbitrary data packet will be discarded.
To detect the arbitrary data packet, the audio core looks for any ancillary data
packets which have a DID other than audio, extended audio, control, SDTI header,
SMPTE 352M or EDH packets. Arbitrary data packets and formatting are defined
in SMPTE 291M. Arbitrary data packets are only present on the luma channel of
the HD video input.
All EDH processing is carried out following the audio core, as the CRC's will require
updating. The audio core detects the presence of EDH packets in the HANC
region. These packets are preserved and re-embedded after multiplexing of audio
packets, according to RP 165. The audio core does not perform EDH CRC
calculation and flag updates.
Since the audio core multiplexes audio packets on to lines where the ancillary data
packet containing EDH checkwords and status flags is to be placed (lines 9 and
272 in 525, and lines 5 and 318 in 625), if there is insufficient horizontal ancillary
data space available after audio multiplexing, the EDH block will overwrite audio
packets. This problem may occur in both 525 and 625 when 16 channels (4 audio
groups) of 24-bit audio are embedded.
NOTE 1: The audio sample distribution used by the SD audio core for both 525 and
625 will increase the available space in the horizontal ancillary data space.
NOTE 2: Due to the large size of the horizontal ancillary data space in 720p/24,
720p/25 and 720p/30 video standards, the maximum number of ancillary data
words the audio core can process is limited to 1024 when configured to these
standards.
Table 4-4
lists the data ID's and packet lengths for arbitrary, EDH, SDTI header
and SMPTE 352M packets.
When the presence of a SMPTE 352M packet is detected, the audio core extracts
and stores the packet for re-insertion. Audio data packets will always be placed
after the SMPTE 352M packet.
Table 4-4: Non-audio Ancillary Data Packet DIDs
Ancillary Data Packet
DID
SDID
Packet Length (Words)
Arbitrary (SMPTE 291M)
User
User
262 max
EDH (RP 165)
1F4h
–
23
Payload Identifier (SMPTE 352M)
241h
101h
11
SDTI Header (SMPTE 305M)
140h
101h
53
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相關代理商/技術參數 |
參數描述 |
|---|---|
| GS1582_09 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner |
| GS1582-IBE3 | 功能描述:RF, RFID, WIRELESS RoHS:是 類別:集成電路 (IC) >> 接口 - 串行器，解串行器 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 功能:解串器 數據速率:2.5Gbps 輸入類型:串行 輸出類型:并聯(lián) 輸入數:- 輸出數:24 電源電壓:1.8 V ~ 3.3 V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:64-TQFP 裸露焊盤 供應商設備封裝:64-TQFP-EP（10x10） 包裝:管件 |
| GS-158N | 制造商:Taiyo Electric Ind. 功能描述: |
| GS15A | 制造商:MEANWELL 制造商全稱:Mean Well Enterprises Co., Ltd. 功能描述:7.2~15WAC-DC Single Output Desktop |
| GS15A/B | 功能描述:插入式交流適配器 RoHS:否 制造商:Phihong 地區(qū):Universal 安裝風格:Wall, Interchangeable Plug 輸入電壓范圍:90 VAC to 264 VAC 輸出端數量:1 輸出功率額定值:5 W 輸出電壓（通道 1）:5 V 輸出電流（通道 1）:1 A 直流輸出連接器:USB Type A 隨附/必需的交流插頭:Required 商用/醫(yī)用:Commercial 效率:Level V |
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