參數(shù)資料
型號(hào)： TVP5147PFPR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PQFP80
封裝： GREEN, PLASTIC, HTQFP-80
文件頁(yè)數(shù)： 30/100頁(yè)
文件大?。?/td> 1465K
代理商： TVP5147PFPR
Functional Description
28
SLES099C—March 2007
TVP5147PFP
2.7.2 VBI Raw Data Output
The TVP5147 decoder can output raw A/D video data at twice the sampling rate for external VBI slicing. This
is transmitted as an ancillary data block, although somewhat differently from the way the sliced VBI data is
transmitted in the FIFO format as described in Section 2.7.1. The samples are transmitted during the active
portion of the line. VBI raw data uses ITU-R BT.656 format having only luma data. The chroma samples are
replaced by luma samples. The TVP5147 decoder inserts a four-byte preamble 000h 3FFh 3FFh 180h before
data start. There are no checksum bytes and fill bytes in this mode.
Table 28. VBI Raw Data Output Format
BYTE
NO.
D9
(MSB)
D8
D7
D6
D5
D4
D3
D2
D1
D0
(LSB)
DESCRIPTION
0
1
VBI raw data preamble
2
1
VBI raw data preamble
3
0
1
0
4
1. Data
5
2. Data
2
il
t l
d t
:
2
× pixel rate luma data
(i e NTSC 601: n = 1707)
n1
n5. Data
(i.e., NTSC 601: n = 1707)
n
n–4. Data
2.8
Reset and Initialization
Reset is initiated at power up or any time terminal 34 (RESETB) is brought low. Table 29 describes the status
of the TVP5147 terminals during and immediately after reset.
Table 29. Reset Sequence
SIGNAL NAME
DURING RESET
RESET COMPLETED
Y[9:0], C[9:0]
Input
High-impedance
RESETB, PWDN, SDA, SCL, FSS,
AVID, GLCO, HS, VS, FID
Input
INTREQ
Input
Output
DATACLK
Output
High-impedance
200 ns (min)
RESETB
(Pin 34)
1 ms (min)
Invalid I2C Cycle
Valid
Normal Operation
Reset
1 ms (min)
SDA
(Pin 29)
POWER
(3.3 V and 1.8 V)
Figure 224. Reset Timing
The TVP5147 requires that pin 69 (C_1/GPIO) be held LOW. If using the 20-/16-bit mode or using this pin as
GPIO, then this pin must be pulled low through a 2.2-k
pulldown resistor (see Figure 51). If unused, this
pin can be shorted to ground. (Note: If using the 20-/16-bit mode and only using the 16 MSBs, it is possible
to short pin 69 to GND, but the current for IOVDD will increase by 2 or 3 mA.)
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