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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 34/112頁(yè) |
| 文件大小： | 943K |
| 代理商： | ADV7188 |
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ADV7188
Table 43. BETACAM Function
BETACAM
Description
0 (default)
Assuming YPrPb is selected as input format.
Selecting PAL with pedestal selects MII.
Selecting PAL without pedestal selects SMPTE.
Selecting NTSC with pedestal selects MII.
Selecting NTSC without pedestal selects SMPTE.
1
Assuming YPrPb is selected as input format.
Selecting PAL with pedestal selects BETACAM.
Selecting PAL without pedestal selects BETACAM
variant.
Selecting NTSC with pedestal selects BETACAM.
Selecting NTSC without pedestal selects BETACAM
variant.
PW_UPD Peak White Update, Address 0x2B [0]
The peak white and average video algorithms determine the
gain based on measurements taken from the active video. The
PW_UPD bit determines the rate of gain change. LAGC[2:0]
must be set to the appropriate mode to enable the peak white or
average video mode in the first place.
Rev. 0 | Page 34 of 112
For more information, refer to the LAGC[2:0] Luma Automatic
Gain Control, Address 0x2C [6:4] section.
0—Updates the gain once per video line.
1 (default)—Updates the gain once per field.
Chroma Gain
CAGC[1:0] Chroma Automatic Gain Control,
Address 0x2C [1:0]
These two bits select the basic mode of operation for automatic
gain control in the chroma path.
Table 44. CAGC Function
CAGC[1:0]
Description
00
Manual fixed gain (use CMG[11:0]).
01
Use luma gain for chroma.
10 (default)
Automatic gain (based on color burst).
11
Freeze chroma gain.
Table 45. Betacam Levels
Name
Y Range
Pr and Pb Range
Sync Depth
CAGT[1:0] Chroma Automatic Gain Timing,
Address 0x2D [7:6]
This register allows the user to influence the tracking speed of
the chroma automatic gain control. It has an effect only if the
CAGC[1:0] register is set to 10 (automatic gain).
Table 46. CAGT Function
CAGT[1:0]
Description
00
Slow (TC = 2 sec)
01
Medium (TC = 1 sec)
10
Fast (TC = 0.2 sec)
11 (default)
Adaptive
CG[11:0] Chroma Gain, Address 0x2D [3:0]; Address 0x2E
[7:0]; CMG[11:0] Chroma Manual Gain, Address 0x2D [3:0];
Address 0x2E [7:0]
CG[11:0] is a dual-function
register. If written to, a desired
manual chroma gain can be programmed. This gain becomes
active if the CAGC[1:0] mode is switched to manual fixed gain.
Refer to Equation 4 for calculating a desired gain. If read back,
the register returns the current gain value. Depending on the
setting in the CAGC[1:0] bits, this is either
Betacam (mV)
0 to 714 (incl. 7.5% pedestal)
–467 to +467
286
Betacam Variant (mV)
0 to 714
–505 to +505
286
SMPTE (mV)
0 to 700
–350 to +350
300
MII (mV)
0 to 700 (incl. 7.5% pedestal)
–324 to +324
300
Chroma manual gain value (CAGC[1:0] set to chroma
manual gain mode)
Chroma automatic gain value (CAGC[1:0] set to any of the
automatic modes)
Table 47. CG/CMG Function
CG[11:0]/CMG[11:0]
Read/Write
CMG[11:0]
Write
Description
Manual gain for chroma
path.
Currently active gain.
CG[11:0]
Read
(
)
4
...
0
1024
4095
0
_
=
≤
<
=
CG
Gain
Chroma
(4)
For example, freezing the automatic gain loop and reading back
the CG[11:0] register results in a value of 0x47A.
1.
Convert the readback value to decimal:
0x47A = 1146d
2.
Apply Equation 4 to convert the readback value:
1146/1024 = 1.12
CKE Color Kill Enable, Address 0x2B [6]
This bit allows the optional color kill function to be switched on
or off. For QAM-based video standards (PAL and NTSC) and
FM-based systems (SECAM), the threshold for the color kill
decision is selectable via the CKILLTHR[2:0] bits.
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| ADV7189B | Multiformat SDTV Video Decoder |
| ADV7189BBSTZ268H | Multiformat SDTV Video Decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
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| 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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