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參數(shù)資料
| 型號(hào)： | AN5095 |
| 廠(chǎng)商： | Panasonic Corporation |
| 英文描述： | Single chip IC with I2C bus interface for PAL/NTSC color TV system |
| 中文描述： | 單一的PAL制式的I2C總線(xiàn)接口芯片IC / NTSC彩色電視系統(tǒng) |
| 文件頁(yè)數(shù)： | 33/36頁(yè) |
| 文件大小： | 405K |
| 代理商： | AN5095 |
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33
ICs for TV
AN5095K
I
Technical Information (continued)
Explanation of each block (continued)
7. I
2
C bus (continued)
4) Sub address byte and data byte format (continued)
The description in ( ) shows the initial state.
5) Contents of I
2
C bus control
(1) The control information is in the direction that the output increases when the datum increases.
(Example: Contrast 00
→
contrast min. , 3F
→
max. , brightness 00
→
pedestal level low, 7F
→
high)
(2) Supplement of other control
a. 00: Color
When data are 00, the color becomes off since the chroma output is decreased completely .
b. 01: Tint
Data 00
→
Skin color tends to become reddish, 3F
→
skin color tends to become greenish.
c. 04, 05, 06: Cut off R, G, B
8-bit DAC
d. 07, 08: Driver R, B
7-bit DAC
e. 09: AFT offset adjustment
The DC offset of S-curve of AFT output is corrected.
Data 01
→
S-curve falls (DC voltage of center frequency drops).
Data FF
→
S-curve rises.
It becomes AFT defeat mode when data 00, the voltage of AFT out (pin 30) becomes the value in
accordance with the external resistor.
AFT changes over 8-bit DAC into 2 stages for variable range and improvement of precision for per 1-bit.
Example: In the case of AFT
Data byte
D4
Sub address
D7
D6
D5
D3
D2
D1
D0
07
SIF VCO
SW1
Chroma
VCO
(0
→
4.43)
Drive R
(41H)
08
Drive B
(41H)
09
AFT
offset
(01H)
0A
50 Hz/60 Hz
killer out
SW
SIF/ext.
SW
AFT offset
SW
SECAM det.
SW
RF AGC
delay
(21H)
0B
Video
adjust
SIF VCO
SW2
H center
(45H)
0C
(C1H)
VIF VCO
0A:
0C-D7:
00
FF
00
FF
Data
0
0, 1
1
Overlap approx. 1/8
O
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參數(shù)描述 |
|---|---|
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