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參數資料
| 型號： | TFP6422PAP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, THERMALLY ENHANCED, POWER, PLASTIC, TQFP-64 |
| 文件頁數： | 42/65頁 |
| 文件大?。?/td> | 813K |
| 代理商： | TFP6422PAP |
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TFP6422, TFP6424
PanelBus
DIGITAL TRANSMITTER/VIDEO ENCODER COMBO
SLDS118 – MARCH 2000
47
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
VRATIOQ2
VRATIOR2
Subaddress = 52
Default = 0x00
7
6
5
4
3
2
1
0
VRATIOR2[7:0]
Subaddress = 53
Default = 0x00
7
6
5
4
3
2
1
0
VRATIQR2[4:0]
VRATIOR2[9:8]
VRATIOQ2[4:0]
Quotient part of the second vertical scaling ratio control
VRATIOR2[9:0]
Remainder part of the second vertical scaling ratio control
Internal vertical scaling ratio control = VRATIOQ2 + VRATIOR2/(FLEN+1)
Use the following equations to calculate VRATIOQ2 and VRATIOR2:
VRATIOQ2 = FLOOR (((FLENS+1)/(FLEN+1) –1) * 64)
VRATIOR2 = 64* (FLENS–FLEN) – VRATIOQ * (FLEN+1)
Where
FLEN +1 = Total number of lines per frame in the output video including active lines and vertical
blanking
FLENS+1 = Total number of lines per frame in the input video including active lines and vertical
blanking
FLOOR(X)
returns the greatest integer that is less then X.
VRATIOQ
VRATIOR
Subaddress = 54
Default = 0x00
7
6
5
4
3
2
1
0
VRATIOR[7:0]
Subaddress = 53
Default = 0x00
7
6
5
4
3
2
1
0
VRATIQ[4:0]
VRATIOR[9:8]
VRATIOQ[4:0]
Quotient part of the second vertical scaling ratio control
VRATIOR[9:0]
Remainder part of the second vertical scaling ratio control
Internal vertical scaling ratio control = VRATIOQ + VRATIOR/(FLEN+1)
Use the following equations to calculate VRATIOQ and VRATIOR:
VRATIOQ = FLOOR (((FLENS+1)/(FLEN+1) –1) * 32)
VRATIOR = 32* (FLENS–FLEN) – VRATIOQ * (FLEN+1)
Where
FLEN +1 = Total number of lines per frame in the output video including active lines and vertical
blanking
FLENS+1 = Total number of lines per frame in the input video including active lines and vertical
blanking
FLOOR(X)
returns the greatest integer that is less then X.
PRODUCT
PREVIEW
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