- 您现在的位置：买卖IC网 > PDF目录98306 > TVP5150PBSG4 (TEXAS INSTRUMENTS INC) COLOR SIGNAL DECODER, PQFP32 PDF资料下载
参数资料
| 型号： | TVP5150PBSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封装： | GREEN, PLASTIC, TQFP-32 |
| 文件页数： | 7/27页 |
| 文件大小： | 453K |
| 代理商： | TVP5150PBSG4 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页
Detailed Description
11
SLES043 — September 2002
TVP5150
2.5.5 Timing Processor
The timing processor is a combination of hardware and software running in the microprocessor that serves
to control horizontal lock to the input sync pulse edge, AGC, offset adjustment in the analog front end, vertical
sync detection, and Macrovision
detection.
The sync input is filtered by a FIR filter for noise reduction. Coarse lock detects the falling or rising edge of
the filtered sync input by comparing pixels against a threshold. The coarse phase error is read by the
microprocessor and used to make coarse adjustments to the horizontal DTO frequency. After coarse lock has
moved the sync edge within the fine lock window, the fine lock is enabled to make fine adjustments to the
horizontal DTO frequency such that the edge is centered within the window to sub pixel accuracy.
The gain and offset of the AFE is adjusted such that the sync height and back porch levels achieve target
values. Filtered samples of the sync tip and back porch are read and processed by the microprocessor. The
gain that is applied to the sync input is also applied to the chroma input. Filtered samples of the chroma
blanking level are read and processed by the microprocessor to adjust the chroma offset to set the blanking
level to the midpoint of the ADC range.
The vertical sync is detected at the input by comparing half line accumulated pixel values against an adaptive
threshold. Sequential patterns of half line-accumulated results are used to detect odd and even field syncs.
The presence of Macrovision is detected by the presence of pseudosyncs by coarse lock. A counter tracks
the number of edges detected after the horizontal sync edge has been detected.
2.5.6 VBI Data Processor
The TVP5150 vertical blank interval (VBI) data processor (VDP) slices various data services like Teletext
(WST, NABST), closed caption (CC), wide screen signaling (WSS) etc. These services are acquired by
programming the VDP to enable a standard(s) in the VBI. The results are stored in a FIFO and/or registers.
The Teletext results are stored in a FIFO only. Table 2–1 gives a summary of the types of VBI data supported
according to the video standard. It supports both square pixel and ITU-R BT. 601 sampling for each standard.
The 26 standard modes are currently supported. Nevertheless, the TVP5150 VDP can be used for custom
modes. TI may provide the RAM content of custom modes when the customer asks with a full custom VBI spec.
One configuration for a standard consists of 15 bytes of data. However, addressing of the RAM has steps of
16 bytes for a convenience.
Table 2–1. Data Types Supported by the VDP
LINE MODE REGISTER
(D0h–FBh) Bit[3:0]
SAMPLING RATE
(0Dh) Bit 7
NAME
DESCRIPTION
0000b
X
Reserved
0000b
X
Reserved
0001b
0
WST PAL B S
Teletext, PAL, system B, square
0001b
1
WST PAL B 6
Teletext, PAL, system B, ITU-R BT 601
0010b
0
WST PAL C S
Teletext, PAL, system C, square
0010b
1
WST PAL C 6
Teletext, PAL, system C, ITU-R BT 601
0011b
0
WST, NTSC B S
Teletext, NTSC, system B, square
0011b
1
WST, NTSC B 6
Teletext, NTSC, system B, ITU-R BT 601
0100b
0
NABTS, NTSC C S
Teletext, NTSC, system C, square
0100b
1
NABTS, NTSC C 6
Teletext, NTSC, system C, ITU-R BT 601
0101b
0
TTX, NTSC D S
Teletext, NTSC, system D (Japan), square
0101b
1
TTX, NTSC D 6
Teletext, NTSC, system D (Japan), ITU-R BT 601
0110b
0
CC, PAL S
Closed caption PAL square
0110b
1
CC, PAL 6
Closed caption PAL ITU-R BT 601
0111b
0
CC. NTSC S
Closed caption NTSC, square
0111b
1
CC, NTSC 6
Closed caption NTSC, ITU-R BT 601
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5150PBS | COLOR SIGNAL DECODER, PQFP32 |
| TVP5150PBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSRQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSR | COLOR SIGNAL DECODER, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5150PBSR | 功能描述:视频 IC Very Low Power 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 |
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5151 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
| TVP5151EVM | 功能描述:视频 IC 开发工具 TVP5151 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 |
| TVP5151IPBS | 功能描述:视频 IC UltraLo-Pwr NTSC/ 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 |
发布紧急采购，3分钟左右您将得到回复。