GM2121 データシートの表示（PDF） - Genesis Microchip

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GM2121

SXGA LCD Monitor Controller with Integrated Analog Interface and Dual LVDS Transmitter

Genesis Microchip 

gm2121 Preliminary Data Sheet

Table Of Contents

1 Overview ........................................................................................................................................8

1.1 gm2121 System Design Example..........................................................................................8

1.2 gm2121 Features ...................................................................................................................9

2 GM2121 Pinout ............................................................................................................................10

3 GM2121Pin List ...........................................................................................................................11

4 Functional Description .................................................................................................................16

4.1 Clock Generation.................................................................................................................16

4.1.1 Using the Internal Oscillator with External Crystal ........................................................17

4.1.2 Using an External Clock Oscillator.................................................................................19

4.1.3 Clock Synthesis ...............................................................................................................20

4.2 Chip Initialization................................................................................................................21

4.2.1 Hardware Reset ...............................................................................................................21

4.2.2 Correct Power Sequencing ..............................................................................................22

4.3 Analog to Digital Converter ................................................................................................22

4.3.1 ADC Pin Connection.......................................................................................................23

4.3.2 ADC Characteristics........................................................................................................23

4.3.3 Clock Recovery Circuit...................................................................................................24

4.3.4 Sampling Phase Adjustment............................................................................................25

4.3.5 ADC Capture Window ....................................................................................................25

4.4 Test Pattern Generator (TPG)..............................................................................................26

4.5 Input Format Measurement .................................................................................................26

4.5.1 HSYNC / VSYNC Delay ................................................................................................27

4.5.2 Horizontal and Vertical Measurement ............................................................................28

4.5.3 Format Change Detection................................................................................................28

4.5.4 Watchdog ........................................................................................................................28

4.5.5 Internal Odd/Even Field Detection (For Interlaced Inputs to ADC Only) ......................28

4.5.6 Input Pixel Measurement ................................................................................................29

4.5.7 Image Phase Measurement..............................................................................................29

4.5.8 Image Boundary Detection..............................................................................................29

4.5.9 Image Auto Balance ........................................................................................................29

4.6 RealColorTM Digital Color Controls....................................................................................29

4.6.1 RealColor™ Flesh tone Adjustment ...............................................................................30

4.6.2 Color Standardization and sRGB Support.......................................................................30

4.7 High-Quality Scaling...........................................................................................................30

4.7.1 Variable Zoom Scaling....................................................................................................30

C2121-DAT-01F

3

http://www.genesis-microchip.com

December 2002

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