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參數(shù)資料
| 型號： | P83C270AAR |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC |
| 中文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP52 |
| 文件頁數(shù)： | 40/80頁 |
| 文件大?。?/td> | 266K |
| 代理商： | P83C270AAR |
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1999 Jun 11
40
Philips Semiconductors
Product specification
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
P8xCx70 family
18.2.6
C
OLOUR
L
OOK
-
UP
T
ABLE
(CLUT)
A Colour Look-up Table with 16 colours is provided. The colours are programmable from a palette of 4096 (4 bits per R,
G and B). The CLUT is defined by writing data to the RAM as described in Section 18.6.
Table 49
CLUT colour values
18.2.7
F
AST
B
LANKING POLARITY
The polarity of the Fast Blanking signal (FBL) can be inverted. When inverted the values of the RGB outputs during line
fly-back periods are also inverted. The polarity is set using the FBPOL bit in the RGB Brightness Register (see
Section 18.9.8).
Table 50
RGB blanking interval values
Table 51
Fast Blanking signal polarity
18.2.8
RGB B
RIGHTNESS
C
ONTROL
A brightness control is provided that allows the RGB output voltages to be modified. The brightness is set using the
BRI0 to BRI3 bits in the RGB Brightness Register (see Section 18.9.8).
Table 52
RGB brightness selection
RED<3-0>
GREEN<3-0>
BLUE<3-0>
COLOUR VALUE
11
10
9
8
7
6
5
4
3
2
1
0
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
0
↓
1
lowest value
↓
highest value
FBOL
RED<3-0>
GREEN<3-0>
BLUE<3-0>
CONDITIONS
11
10
9
8
7
6
5
4
3
2
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Normal operation
Inverted Fast
Blanking signal
FBPOL
FBL
CONDITION
0
0
1
1
1
0
0
1
RGB display
Video display
RGB display
Video display
BRI3
BRI2
BRI1
BRI0
RGB BRIGHTNESS
0
↓
1
0
↓
1
0
↓
1
0
↓
1
lowest value
↓
highest value
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