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參數(shù)資料
| 型號： | ADV7188 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat SDTV Video Decoder with Fast Switch Overlay Support |
| 中文描述： | 標(biāo)清多格式視頻解碼器支持快速開關(guān)重疊 |
| 文件頁數(shù)： | 59/112頁 |
| 文件大小： | 943K |
| 代理商： | ADV7188 |
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ADV7188
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 bi-
phase 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 59 of 112
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADV7189B | Multiformat SDTV Video Decoder |
| ADV7189BBSTZ268H | Multiformat SDTV Video Decoder |
| ADV7189BKSTZ10F | Multiformat SDTV Video Decoder |
| ADV7189 | Multiformat SDTV Video Decoder |
| ADV7189KST | Multiformat SDTV Video Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7188BSTZ | 功能描述:IC DECODER VID MULTIFORM 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(biāo)準(zhǔn)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 |
| ADV7189 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189BBSTZ | 功能描述:IC VIDEO DECODER SDTV 80-LQFP 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(biāo)準(zhǔn)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 |
| ADV7189BBSTZ268H | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
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