- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369517 > BT849A Single-Chip Video Capture for PCI PDF資料下載
參數(shù)資料
| 型號(hào)： | BT849A |
| 英文描述： | Single-Chip Video Capture for PCI |
| 中文描述： | 單芯片的PCI視頻捕捉 |
| 文件頁(yè)數(shù)： | 48/141頁(yè) |
| 文件大?。?/td> | 1149K |
| 代理商： | BT849A |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)當(dāng)前第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)
Bt848/848A/849A
Single-Chip Video Capture for PCI
Brooktree
38
F
UNCTIONAL
D
ESCRIPTION
Video Data Format Conversion
L848A_A
Video Data Format Conversion
Pixel Data Path
The video decoder/scaler portion of the Bt848 generates a video data stream in
packed 4:2:2 YCrCb format. The video data is then color space converted and for-
matted in a 32-bit wide DWORD. Figure 21 shows the steps in converting the vid-
eo data from packed 4:2:2 YCrCb to the desired format. The YCrCb 4:2:2 data is
up-sampled to 4:4:4 format prior to conversion to RGB. It can then be dithered,
have gamma correction removed, or be presented directly to the byte swap circuit.
In the case where 4:1:1 data is desired, the 4:2:2 data is first down sampled, then
packed into BtYUV format or converted to planar format and vertically subsam-
pled to achieve the YUV9 format. Alternatively, packed 4:2:2 data may be convert-
ed to planar 4:2:2 and vertically sub-sampled to YUV12 format. The vertical
subsampling is achieved via the appropriate DMA instructions (see the DMA con-
troller section).
Bt848 also offers a Y8 color format, in which the chroma component of the
packed 4:2:2 data is stripped and the luma component is packed into 8 bits. This
format is otherwise known as gray scale. Table 7 shows the various color formats
supported by the Bt848 and the mapping of the bytes onto 32-bit DWORDs.
Video Control Code
Status Data
In addition to the pixel information, the Bt848’s Video Data Format Converter pro-
vides four bits of video control status code to the FIFO. These four bits of status
code STATUS[3:0] are based on inputs from the video decoder/scaler block of the
Bt848, and convey information about the pixel data and the state of the video tim-
ing (Figure 21). STATUS[3:0] are used to specify the FIFO mode (packed or pla-
nar), provide information regarding the pixel data (respective position of the pixel
and number of valid bytes), to indicate if the pixel data is valid, and to signal the
end of a capture enabled field. See Table 9 in the FIFO section for a full list of the
status codes and descriptions.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BT8510EPJC | PCM Transceiver |
| BT857KPJ | Color Encoder Circuit |
| BT8958EHJ50 | xDSL Interface |
| BT8953AEPFC | xDSL Interface |
| BT8953AEPJ | xDSL Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BT849AKPF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Chip Video Capture for PCI |
| BT850-SA | 功能描述:BTV4.2 DUAL MODE USB HCI MODULE 制造商:laird - wireless & thermal systems 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1 |
| BT850-SA-T/R | 功能描述:BTV4.2 DUAL MODE USB HCI MODULE 制造商:laird - wireless & thermal systems 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:2,500 |
| BT850-ST | 功能描述:BTV4.2 DUAL MODE USB HCI MODULE 制造商:laird - wireless & thermal systems 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1 |
| BT850-ST-T/R | 功能描述:BTV4.2 DUAL MODE USB HCI MODULEE 制造商:laird - wireless & thermal systems 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:2,500 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。