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参数资料
| 型号： | TVP5147PFPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封装： | GREEN, PLASTIC, HTQFP-80 |
| 文件页数： | 54/100页 |
| 文件大小： | 1465K |
| 代理商： | TVP5147PFPRG4 |
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Functional Description
50
SLES099C—March 2007
TVP5147PFP
2.11.36 Status 2 Register
Subaddress
3Bh
Read only
7
6
5
4
3
2
1
0
Signal present
Weak signal detection
PAL switch polarity
Field sequence status
Reserved
Macrovision detection [2:0]
Signal present detection:
0 = Signal not present
1 = Signal present
Weak signal detection:
0 = No weak signal
1 = Weak signal mode
PAL switch polarity of first line of odd field:
0 = PAL switch is zero.
1 = PAL switch is one.
Field sequence status:
0 = Even field
1 = Odd field
Macrovision detection [2:0]:
000 = No copy protection
001 = AGC pulses/pseudo syncs present (type 1)
010 = 2-line color stripe only present
011 = AGC pulses/pseudo syncs and 2-line color stripe present (type 2)
100 = Reserved
101 = Reserved
110 = 4-line color stripe only present
111 = AGC pulses/pseudo syncs and 4-line color stripe present (type 3)
2.11.37 AGC Gain Status Register
Subaddress
3Ch3Dh
Read only
Subaddress
7
6
5
4
3
2
1
0
3Ch
Fine gain [7:0]
3Dh
Coarse gain [3:0]
Fine gain [11:8]
Fine gain [11:0]: This register provides the fine gain value of sync channel.
1111 1111 1111 = 1.9995
1000 0000 0000 = 1
0010 0000 0000 = 0.5
Coarse gain [3:0]: This register provides the coarse gain value of sync channel.
1111 = 2
0101 = 1
0000 = 0.5
These AGC gain status registers are updated automatically by the TVP5147 decoder with AGC on. In manual
gain control mode, these register values are not updated by the TVP5147 decoder.
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