ADE3000SXT STMicroelectronics, ADE3000SXT Datasheet - Page 74
ADE3000SXT
Manufacturer Part Number
ADE3000SXT
Description
LCD Display Engines with Integrated DVI/ ADC and YUV Ports
Manufacturer
STMicroelectronics
Datasheet
1.ADE3000SXT.pdf
(88 pages)
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Gamma Block
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2.21
2.22
FLK_MEAS7_0
FLK_MEAS7_1
FLK_MEAS7_2
FLK_MEAS7_3
GAMMA_CTRL
Gamma Block
The Gamma block performs an 8 bit to 10 bit lookup table on the 3 x 8 bits (R, G, B) color data
coming from SCALER.
The RAMs are individually programmable (read and write) using I2C access. The memory map is
as follows:
Even addresses are the 8-bit LSBs of the 10-bit gamma value. Odd addresses are the 2 MSBs.
APC Block
APC (formerly known as Arithmos Perfect Color) dithers an input 10-bit video stream down to 4-8
output bits. The dithering is done in space and time in such a way that the eye does not perceive
objectionable artifacts such as:
Register Name
Register Name
I2C address 0x1000 - 0x11FF: red RAM
I2C address 0x1200 - 0x13FF: green RAM
I2C address 0x1400 - 0x15FF: blue RAM
fixed dither patterns,
contours,
flickering pixels
phase correlated flickering, which creates wave patterns known as "swimming".
0x0CCD
0x0CCE
0x0CCF
0x0CD0
0x0C10
Table 26: Flicker Registers (Sheet 3 of 3)
Addr
Addr
Table 27: Gamma Registers
R/W
R/W
R/W
R/W
R/W
Mode
Mode
[7:4]
[3]
[2]
[1:0]
[7:0]
[7:0]
[7:0]
[7:0]
Bits
Bits
0x0
0x0
0x0
0x0
0x0
Default
Default
Score for Pattern 7
1: Disable RAM access
1: Test Mode
Gamma Mode Select
0x0: 10b linear bypass
0x1: 8b->10b gamma table (normal)
0x2: 8b linear bypass (no interpolation)
0x3: 8b->10b gamma table (normal)
Reserved
0: Normal
0: Normal
Description
Description
ADE3XXX
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