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參數(shù)資料
| 型號： | LM1276AAA |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| 中文描述： | 150 MHz的I2C兼容的RGB前置放大器512個字符OSD光盤，512個字符RAM和4 DAC的內(nèi)置 |
| 文件頁數(shù)： | 34/50頁 |
| 文件大?。?/td> | 2597K |
| 代理商： | LM1276AAA |
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Control Register Definitions
(Continued)
Bit 5
Bit 6
Bit 7
Reserved. This bit should be set to zero.
Reserved. This bit should be set to zero.
Setting this bit will cause a software reset. All registers (except this one) are loaded with their default values. All
operations currently in progress are aborted (except for I
2
C transactions). This bit automatically clears itself when
the reset has been completed.
Vertical Blank Duration Register:
VBLANKDUR (0x8403)
Vertical Blanking Duration
VB[6:0]
Reserved
RSV
Bits 6–0
This register determines the duration of the vertical blanking signal in scan lines. When vertical blanking is enabled,
it is recommended that this register be set to a number greater than 0x0A.
Reserved. This bit should be set to zero.
Bit 7
OSD Character Height Register:
CHARHTCTRL (0x8404)
CH[7:0]
Bits 7–0
This register determines the OSD character height as described in the section Constant Character Height
Mechanism. The values of this register is equal to the approximate number of OSD height compensated lines
required on the screen, divided by 4. This value is not exact due to the approximation used in scaling the character.
Example: If approximately 384 OSD lines are required on the screen (regardless of the number of scan lines) then
the Character Height Control Register is programmed with 81 (0x51).
Enhanced Feature Register 1:
Button Box Highlight Color
BBHLCTRLB1 (0x8406)
Reserved
X
X
BBHLCTRLB0 (0x8405)
Highlight - Red
R[2:0]
Highlight - Green
G[2:0]
Highlight - Blue
B[2:0]
X
X
X
X
X
Bits 8–0
Bits 15–9
These determine the button box highlight color.
Reserved. These bits should be set to zero.
Enhanced Feature Register 2:
Button Box Lowlight Color
BBLLCTRLB1 (0x8408)
Reserved
X
X
BBLLCTRLB0 (0x8407)
Lowlight - Red
R[2:0]
Lowlight - Green
G[2:0]
Lowlight - Blue
B[2:0]
X
X
X
X
X
Bits 8–0
Bits 15–9
These determine the button box lowlight color.
Reserved. These bits should be set to zero.
Enhanced Feature Register 3:
Heavy Button Box Lowlight/Shading/Shadow
CHSDWCTRLB1 (0x840A)
Reserved
X
X
CHSDWCTRLB0 (0x8409)
Shadow - Red
R[2:0]
Shadow - Green
G[2:0]
Shadow - Blue
B[2:0]
X
X
X
X
X
Bits 8–0
Bits 15–9
These registers determine the heavy button box lowlight, shading or shadow color.
Reserved. These bits should be set to zero.
L
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