參數(shù)資料
型號: TVP5040CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁數(shù): 30/109頁
文件大?。?/td> 568K
代理商: TVP5040CPFP
2–11
Lowpass Filter
Sync Detector
Digitized
Video
XTAL1
Phase
Detector
Loop
Filter
Digital
Control
Oscillator
XTAL2
Crystal
Clock
Generator
Clock
Generation
Circuit
Line-Locked
Clock
PLL
SCLK
PCLK
Figure 2–19. Clock Circuit Diagram
TVP5040
35
XTAL1
14.31818 MHz
Crystal
36
XTAL2
TVP5040
35
XTAL1
36
XTAL2
CL1
CL2
14.31818 MHz
TTL Clock
R
Figure 2–20. Example Reference Clock Configurations
The TVP5040 generates three signals PCLK, SCLK, and PREF used for clocking data. PCLK, the pixel clock, can
be used for clocking data in the 20-bit and 16-bit 4:2:2 output formats. SCLK is twice the PCLK frequency and may
be used for clocking data in the 10-bit and 8-bit 4:2:2 as well as in ITU-R BT.656 formats. PREF is used as a clock
qualifier with SCLK to clock data in the 20-bit and 16-bit 4:2:2 formats.
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