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參數(shù)資料
| 型號： | GM5115 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | ONPANEL LCD PANEL CONTROLLER |
| 中文描述： | ONPANEL液晶顯示器控制器 |
| 文件頁數(shù)： | 31/58頁 |
| 文件大?。?/td> | 1505K |
| 代理商： | GM5115 |
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***
Genesis Microchip Confidential ***
gm5115/25 Preliminary Data Sheet
June 2002
22
C5115-DAT-01H
The DDC2Bi port can be used for factory testing. This is illustrated in Figure 14. The factory test
station connects to the gm5115/25 through the Direct Data Channel (DDC) of the DSUB15 or
DVI connectors. Then, the PC can make gm5115/25 display test patterns (see section 4.5). A
camera can be used to automate the calibration of the LCD panel.
DDC
Device-Under-Test
Factory Test Station
Camera
Figure 14.
Factory Calibration and Test Environment
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The gm5115/25 has an Input Format Measurement block (the IFM) providing the capability of
measuring the horizontal and vertical timing parameters of the input video source. This
information may be used to determine the video format and to detect a change in the input
format. It is also capable of detecting the field type of interlaced formats.
The IFM features a programmable reset, separate from the regular gm5115/25 soft reset. This
reset disables the IFM, reducing power consumption. The IFM is capable of operating while the
gm5115/25 is running in power-down mode.
Horizontal measurements are measured in terms of the selected IFM_CLK (either TCLK or
RCLK/4), while vertical measurements are measured in terms of HSYNC pulses.
For an overview of the internally synthesized clocks, see section 4.1.
4.6.1 HSYNC / VSYNC Delay
The active input region captured by the gm5115/25 is specified with respect to internal HSYNC
and VSYNC. By default, internal syncs are equivalent to the HSYNC and VSYNC at the input
pins and thus force the captured region to be bounded by external HSYNC and VSYNC timing.
However, the gm5115/25 provides an internal HSYNC and VSYNC delay feature that removes
this limitation. This feature is available for use with both the ADC input and the DVI Rx (DE-
regeneration mode). By delaying the sync internally, the gm5115/25 can capture data that spans
across the sync pulse.
It is possible to use HSNYC and VSYNC delay for image positioning. (Alternatively,
Source_HSTART and Source_VSTART in Figure 12 are used for image positioning of analog
input.) Taken to an extreme, the intentional movement of images across apparent HSYNC and
VSYNC boundaries creates a horizontal and/or vertical wrap effect.
HSYNC is delayed by a programmed number of selected input clocks.
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| GM5125-H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ONPANEL LCD PANEL CONTROLLER |
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