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參數(shù)資料
| 型號： | TVP5147PFPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | GREEN, PLASTIC, HTQFP-80 |
| 文件頁數(shù)： | 25/100頁 |
| 文件大小： | 1465K |
| 代理商： | TVP5147PFPR |
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Functional Description
23
SLES099C—March 2007
TVP5147PFP
NTSC 601
64
PAL 601
10-Bit (PCLK = 2
× Pixel Clock)
NTSC Sqp
PAL Sqp
64
Mode
B/2
First Field
B/2
858
864
780
944
H/2
32
20-Bit (PCLK = 1
× Pixel Clock)
32
B/2
429
432
390
472
H/2
HS
VS
Second Field
HS
VS
B/2
H/2 + B/2
Figure 222. VSYNC Position With Respect to HSYNC
2.5.2 Embedded Syncs
Standards with embedded syncs insert the SAV and EAV codes into the data stream on the rising and falling
edges of AVID. These codes contain the V and F bits which also define vertical timing. Table 23 gives the
format of the SAV and EAV codes.
H equals 1 always indicates EAV. H equals 0 always indicates SAV. The alignment of V and F to the line and
field counter varies depending on the standard.
The P bits are protection bits:
P3 = V xor H; P2 = F xor H; P1 = F xor V; P0 = F xor V xor H
Table 23. EAV and SAV Sequence
D9 (MSB)
D8
D7
D6
D5
D4
D3
D2
D1
D0
Preamble
1
Preamble
0
Preamble
0
Status word
1
F
V
H
P3
P2
P1
P0
0
2.6
I2C Host Interface
Communication with the TVP5147 decoder is via an I2C host interface. The I2C standard consists of two
signals, the serial input/output data (SDA) line and the serial input clock line (SCL), which carry information
between the devices connected to the bus. A third signal (I2CA) is used for slave address selection. Although
an I2C system can be multimastered, the TVP5147 decoder functions as a slave device only.
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