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參數資料
| 型號： | AD7183 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Advanced Video Decoder with 10-Bit ADC and Component Input Support |
| 中文描述： | 先進的視頻解碼器，10位ADC和組件輸入支持 |
| 文件頁數： | 28/41頁 |
| 文件大小： | 484K |
| 代理商： | AD7183 |
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REV. 0
–28–
ADV7183
Table XXIV. Digital Clamp Control 1 Register (Subaddress 15)
Bit Description
DCCO[11:8]
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting
X
X
1
X
X
Only applicable if DCCM is set to manual offset
mode.
Digital Clamp Operational
Digital Clamp Frozen
Slow (TC = 1 second)
Medium (TC = 0.5 second)
Fast (TC = 0.1 second)
Dependent on VID_QUAL
Automatic Digital Clamp
Manual Offset Correction
5
DCFE
2
0
1
DCT[1:0]
3
0
0
1
1
0
1
0
1
DCCM[7:0]
4
0
1
NOTES
1
Digital Color Clamp Offset. Holds upper 4 bits of the digital offset value which is added to the raw data from the ADC before entering the core.
2
Digital Clamp Freeze Enable. Allows the user to freeze the digital clamp loop at any point in time.
3
Digital Clamp Timing. Determines the time constant of the digital clamping circuitry.
4
Digital Color Clamp Mode. Sets the mode of operation for the digital clamp circuitry. Offset correction via DCCO for C only.
5
Offset Correction via DCCO for C only.
Table XXV. Digital Clamp Control 2 Register (Subaddress 16)
Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting
DCCO[7:0]
*
X
X
X
X
*
Digital Color Clamp Offset. Holds the lower 8 bits of the digital offset value which is added to the raw data from the ADC before entering the core. Only applicable if
DCCM is set to manual offset mode.
X
X
X
X
Table XXVI. Shaping Filter Control Register (Subaddress 17)
Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting
YSFM[4:0]
1
0
0
0
–
1
1
1
1
1
1
1
1
1
1
1
1
1
1
CSFM[2:0]
2
0
0
0
0
0
1
0
1
0
–
–
–
1
1
0
1
1
1
NOTES
1
Y Shaping Filter Mode. Allows the user to select a wide range of low-pass and notch filters.
2
C Shaping Filter Mode. Allows the selection from a range of low-pass chrominance filters. Auto = filter selected based on scaling factor.
0
0
0
–
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
–
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
–
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
–
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Auto Wide Notch
Auto Narrow Notch
SVHS 1
–
SVHS 17
PAL NN1
PAL NN2
PAL NN3
PAL WN 1
PAL WN 2
NTSC NN1
NTSC NN2
NTSC NN3
NTSC WN1
NTSC WN2
NTSC WN3
Not Used
SVHS 18
Auto Selection 1.5 MHz
Auto Selection 2.17 MHz
SH1
–
SH5
SH6
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