- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10627 > ADV7180BSTZ-REEL (Analog Devices Inc)IC VIDEO DECODER SDTV 64-LQFP PDF資料下載
參數(shù)資料
| 型號： | ADV7180BSTZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 75/116頁 |
| 文件大小： | 0K |
| 描述： | IC VIDEO DECODER SDTV 64-LQFP |
| 產(chǎn)品變化通告： | ADV7180 Metal Mask Edit 22/Oct/2009 |
| 設(shè)計(jì)資源： | Low Cost Differential Video Receiver Using ADA4851 Amplifier and ADV7180 Video Decoder (CN0060) Low Cost Video Multiplexer for Video Switching Using ADA4853-2 Op Amp with Disable Function (CN0076) |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 視頻解碼器 |
| 應(yīng)用： | 數(shù)碼相機(jī)，手機(jī)，便攜式視頻 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應(yīng)商設(shè)備封裝： | 64-LQFP（10x10） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ADV7180BSTZ-REELDKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁當(dāng)前第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁
Data Sheet
ADV7180
Rev. I | Page 61 of 116
I2C Interface
Dedicated I2C readback registers are available for CCAP, CGMS,
WSS, Gemstar, VPS, PDC/UTC, and VITC. Because teletext is a
high data rate standard, data extraction is supported only through
the ancillary data packet.
User Interface for I2C Readback Registers
The VDP decodes all enabled VBI data standards in real time.
Because the I2C access speed is much lower than the decoded
rate, when the registers are accessed, they may be updated with
data from the next line. To avoid this, VDP has a self-clearing
clear bit and an available (AVL) status bit accompanying all I2C
readback registers.
The user must clear the I2C readback register by writing a high to
the clear bit. This resets the state of the available bit to low and
indicates that the data in the associated readback registers is not
valid. After the VDP decodes the next line of the corresponding
VBI data, the decoded data is placed into the I2C readback
register and the available bit is set to high to indicate that valid
data is now available.
Though the VDP decodes this VBI data in subsequent lines if
present, the decoded data is not updated to the readback registers
until the clear bit is set high again. However, this data is
available through the 656 ancillary data packets.
The clear and available bits are in the VDP_STATUS_CLEAR
(Address 0x78, user sub map, write only) and VDP_STATUS
(Address 0x78, user sub map, read only) registers, respectively.
Example I2C Readback Procedure
The following tasks must be performed to read one packet
(line) of PDC data from the decoder:
1. Write 10 to I2C_GS_VPS_PDC_UTC[1:0] (Address 0x9C,
user sub map) to specify that PDC data must be updated to
I2C registers.
2. Write high to the GS_PDC_VPS_UTC_CLEAR bit
(Address 0x78, user sub map) to enable I2C register
updating.
3. Poll the GS_PDC_VPS_UTC_AVL bit (Address 0x78, user
sub map) going high to check the availability of the PDC
packets.
4. Read the data bytes from the PDC I2C registers. Repeat
Step 1 to Step 3 to read another line or packet of data.
To read a packet of CCAP, CGMS, or WSS data, Step 1 to Step 3
are required only because they have dedicated registers.
VDP—Content-Based Data Update
For certain standards, such as WSS, CGMS, Gemstar, PDC, UTC,
and VPS, the information content in the signal transmitted remains
the same over numerous lines, and the user may want to be notified
only when there is a change in the information content or loss
of the information content. The user must enable content-based
updating for the required standard through the GS_VPS_PDC_
UTC_CB_CHANGE and WSS_CGMS_CB_CHANGE bits.
Therefore, the available bit shows the availability of that standard
only when its content has changed.
Content-based updating also applies to lines with lost data.
Therefore, for standards like VPS, Gemstar, CGMS, and WSS, if no
data arrives in the next four lines programmed, the corresponding
available bit in the VDP_STATUS register is set high and the
content in the I2C registers for that standard is set to 0. The user
must write high to the corresponding clear bit so that when a
valid line is decoded after some time, the decoded results are
available in the I2C registers, with the available status bit set high.
If content-based updating is enabled, the available bit is set high
(assuming the clear bit was written) in the following cases:
The data contents have changed.
Data was being decoded and four lines with no data have
been detected.
No data was being decoded and new data is now being
decoded.
GS_VPS_PDC_UTC_CB_CHANGE, Enable Content-
Based Updating for Gemstar/VPS/PDC/UTC,
Address 0x9C[5], User Sub Map
Setting GS_VPS_PDC_UTC_CB_CHANGE to 0 disables
content-based updating.
Setting GS_VPS_PDC_UTC_CB_CHANGE to 1 (default)
enables content-based updating.
WSS_CGMS_CB_CHANGE, Enable Content-Based
Updating for WSS/CGMS, Address 0x9C[4],
User Sub Map
Setting WSS_CGMS_CB_CHANGE to 0 disables content-based
updating.
Setting WSS_CGMS_CB_CHANGE to 1 (default) enables
content-based updating.
VDP—Interrupt-Based Reading of VDP I2C Registers
Some VDP status bits are also linked to the interrupt request
controller so that the user does not have to poll the available status
bit. The user can configure the video decoder to trigger an
interrupt request on the INTRQ pin in response to the valid
data available in the I2C registers. This function is available for
the following data types:
CGMS or WSS. The user can select either triggering an
interrupt request each time sliced data is available or
triggering an interrupt request only when the sliced data
has changed. Selection is made via the WSS_CGMS_CB_
CHANGE bit.
Gemstar, PDC, VPS, or UTC. The user can select to trigger
an interrupt request each time sliced data is available or to
trigger an interrupt request only when the sliced data has
changed. Selection is made via the GS_VPS_PDC_UTC_
CB_CHANGE bit.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3485ECSA+ | IC TXRX RS485/422 10MBPS 8SOIC |
| VI-BWP-MX-F3 | CONVERTER MOD DC/DC 13.8V 75W |
| VI-BWP-MX-F2 | CONVERTER MOD DC/DC 13.8V 75W |
| VI-BWP-MW | CONVERTER MOD DC/DC 13.8V 100W |
| VE-2W2-IW-F2 | CONVERTER MOD DC/DC 15V 100W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7180KCP32Z | 功能描述:IC VIDEO DECODER 10BIT 32LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動(dòng)電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| ADV7180KCP32Z-RL | 功能描述:IC VIDEO DECODER 10BIT 32LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動(dòng)電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| ADV7180KST48Z | 功能描述:IC VID DECOD SDTV 10BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動(dòng)電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| ADV7180KST48Z-RL | 功能描述:視頻 IC 48-Lead Low Profile Quad Flat Package RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| ADV7180WBCP32Z | 制造商:Analog Devices 功能描述:IC, 10-BIT 4X OVERSAMPLING SDTV DECODER 制造商:Analog Devices 功能描述:SDTV VIDEO DECODER 32-PIN LFCSP EP TRAY - Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。