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| 型号： | TVP5157PNPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP128 |
| 封装： | GREEN, PLASTIC, HTQFP-128 |
| 文件页数： | 74/108页 |
| 文件大小： | 1395K |
| 代理商： | TVP5157PNPR |
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SLES243E
– JULY 2009 – REVISED MARCH 2011
Table 4-57. Blue Screen LSB Control
Subaddress
93h
Default
00h
7
6
5
4
3
2
1
0
Reserved
Y value LSB [1:0]
Cb value LSB [1:0]
Cr value LSB [1:0]
The two LSBs for the Blue screen Y, Cb, and Cr values are represented in this register.
Table 4-58. Noise Measurement
Subaddress
94h-95h
Default
Read Only
Subaddress
7
6
5
4
3
2
1
0
94h
Noise Measurement [7:0]
95h
Noise Measurement [15:8]
Noise measurement[15:0]
Used by the weak signal detection algorithm.
Since this register is a double byte register it is necessary to "capture" the setting into the register to ensure that the value is not
updated between reading the lower and upper bytes. In order to cause this register to "capture" the current settings bit 0 of I2C
register 24h (status request) should be set to a 1. Once the internal processor has updated this register bit 0 of register 24h will be
cleared, indicating that both bytes of the noise measurement register have been updated and can be read. Either byte may be read
first since no further update will occur until bit 0 of 24h is set to 1 again.
Table 4-59. Weak Signal High Threshold
Subaddress
96h
Default
60h
7
6
5
4
3
2
1
0
Level [7:0]
This register controls the upper threshold of the noise measurement used to determine whether the input signal should be considered a
weak signal.
Table 4-60. Weak Signal Low Threshold
Subaddress
97h
Default
50h
7
6
5
4
3
2
1
0
Level [7:0]
This register controls the lower threshold of the noise measurement used to determine whether the input signal should be considered a
weak signal.
68
Internal Control Registers
Copyright
2009–2011, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5157PNP | COLOR SIGNAL DECODER, PQFP128 |
| TVP5156PNPR | COLOR SIGNAL DECODER, PQFP128 |
| TVP5156PNP | COLOR SIGNAL DECODER, PQFP128 |
| TVP5158IPNPR | COLOR SIGNAL DECODER, PQFP128 |
| TVP5158IPNP | COLOR SIGNAL DECODER, PQFP128 |
相关代理商/技术参数 |
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| TVP5158 | 制造商:TI 制造商全称:Texas Instruments 功能描述:With Independent Scalers, Noise Reduction, Auto Contrast, and Flexible Output Formatter for Security and Other Multi-Channel Video Applications |
| TVP5158EVM | 功能描述:视频 IC 开发工具 TVP5158 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| TVP5158IPNP | 功能描述:视频 IC 4Ch NTSC/PAL Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5158IPNPQ1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:With Independent Scalers, Noise Reduction, Auto Contrast, and Flexible Output Formatter for Security and Other Multi-Channel Video Applications |
| TVP5158IPNPR | 功能描述:视频 IC 4Ch NTSC/PAL Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
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