參數(shù)資料
型號(hào)： GM2115
廠商： Electronic Theatre Controls, Inc.
英文描述： ANALOG INTER FACE XGA/SXGA ONPANEL LCD PANEL CONTROLLER
中文描述： 模擬國(guó)際米蘭的XGA / SXGA ONPANEL液晶顯示器控制器
文件頁(yè)數(shù)： 34/54頁(yè)
文件大?。?/td> 1339K
代理商： GM2115
***
Genesis Microchip Confidential ***
gm2115/25 Preliminary Data Sheet
June 2002
32
C2115-DAT-01B
DCLK (Output)
DEN (Output)
OR/OG/OB
(Output)
rgb0
rgb8
rgb6
rgb4
rgb2
ER/EG/EB
(Output)
XXX
rgb1
rgb9
rgb7
rgb5
rgb3
XXX
Figure 20.
Double Pixel Wide Display Data
4.10.3 Panel Power Sequencing (PPWR, PBIAS)
The gm2115/25 has two dedicated outputs PPWR and PBIAS (pins 113 and 114) to control
LCD power sequencing once data and control signals are stable. The timing of these signals
is fully programmable.
PPWR Output
Panel Data and Control Signals
PBIAS Output
<State0>
<State1>
<State2>
<State3>
<State2>
<State1>
<State0>
TMG1
TMG2
TMG2
TMG1
POWER_SEQ_EN = 1
POWER_SEQ_EN = 0
Figure 21.
Panel Power Sequencing
4.10.4 Output Dithering
The Gamma LUT outputs a 10-bit value for each color channel. This value is dithered down
to either 8-bits for 24-bit per pixel panels, or 6-bits for 18-bit per pixel panels.
The benefit of dithering is that the eye tends to average neighboring pixels and a smooth
image free of contours is perceived. Dithering works by spreading the quantization error over
neighboring pixels both spatially and temporally. Two dithering algorithms are available:
random or ordered dithering. Ordered dithering is recommended when driving a 6-bit panel.
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