參數(shù)資料
型號： ADV7184
廠商： Analog Devices, Inc.
英文描述： Multiformat SDTV Video Decoder with Fast Switch Overlay Support
中文描述： 標清多格式視頻解碼器支持快速開關(guān)重疊
文件頁數(shù)： 58/108頁
文件大小： 925K
代理商： ADV7184
ADV7184
CGMS and WSS
The CGMS and WSS data packets convey the same type of
information for different video standards. WSS is for PAL and
CGMS is for NTSC and hence the CGMS and WSS readback
registers are shared. WSS is bi-phase coded; the VDP does a
biphase decoding to produce the 14 raw WSS bits in the
CGMS/WSS readback I
2
C registers and sets the
CGMS_WSS_AVL bit.
Rev. 0 | Page 58 of 108
CGMS_WSS_CLEAR CGMS/WSS Clear, Address 0x78 [2],
User Sub Map, Write Only, Self Clearing
1—Re-initializes the CGMS/WSS readback registers.
CGMS_WSS_AVL CGMS/WSS Available Bit, Address 0x78
[2], User Sub Map, Read Only
0—CGMS/WSS was not detected.
1—CGMS/WSS was detected.
CGMS_WSS_DATA_0[3:0] Address 0x7D [3:0]
CGMS_WSS_DATA_1[7:0] Address 0x7E [7:0]
CGMS_WSS_DATA_2[7:0] Address 0x7F [7:0]
User Sub Map, read only. These bits hold the decoded CGMS or
WSS data.
Refer to Figure 37 and Figure 38 for the I
2
C to WSS and CGMS
bit mapping.
CCAP
Two bytes of decoded closed caption data are available in the
I
2
C registers. The field information of the decoded CCAP data
can be obtained from the CC_EVEN_FIELD bit (register 0x78).
CC_CLEAR Closed Caption Clear, Address 0x78 [0] User
Sub Map, Write Only, Self Clearing
1—Re-initializes the CCAP readback registers.
CC_AVL Closed Caption Available, Address 0x78 [0], User
Sub Map, Read Only
0—Closed captioning was not detected.
1—Closed captioning was detected.
CC_EVEN_FIELD Address 0x78 [1], User Sub Map, Read
Only
Identifies the field from which the CCAP data was decoded.
0—Closed captioning detected on an ODD field.
1—Closed captioning was detected on an EVEN field.
VDP_CCAP_DATA_0 Address 0x79 [7:0], User Sub Map,
Read Only
Decoded Byte 1 of CCAP data.
VDP_CCAP_DATA_1 Address 0x7A [7:0], User Sub Map,
Read Only
Decoded Byte 2 of CCAP data.
0
ACTIVE
VIDEO
VDP_CGMS_WSS_
DATA_1[5:0]
VDP_CGMS_WSS_DATA_2
SRUN-IN
START
CODE
0
1
2
3
4
5
6
7
0
1
2
3
4
5
11.0
μ
s
38.4
μ
s
42.5
μ
s
Figure 37. WSS Waveform
0
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
VDP_CGMS_WSS_DATA_1
VDP_CGMS_WSS_
DATA_0[3:0]
VDP_CGMS_WSS_DATA_2
REF
+100 IRE
+70 IRE
0 IRE
–40 IRE
11.2
μ
s
49.1
μ
s
±
0.5
μ
s
CRC SEQUENCE
2.235
μ
s
±
20ns
Figure 38. CGMS Waveform
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7184BSTZ 功能描述:IC DECODER VID SDTV MULTI 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799
ADV7185 制造商:AD 制造商全稱:Analog Devices 功能描述:Professional NTSC/PAL Video Decoder with 10-Bit CCIR656 Output
ADV7185KST 制造商:AD 制造商全稱:Analog Devices 功能描述:Professional NTSC/PAL Video Decoder with 10-Bit CCIR656 Output
ADV7186 制造商:AD 制造商全稱:Analog Devices 功能描述:Video Decoder and Display Processor
ADV7186BBCZ 功能描述:IC VIDEO DECODER 196CSPBGA 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 標準包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機，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
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