AL128 datasheet(2/45 Pages) ETC

2 / 45 page

AL128

April 2, 1999

Contents

1.0 Features ________________________ 3

2.0 Applications _____________________ 4

3.0 General Description _______________ 4

4.0 Pinout Diagram __________________ 5

5.0 Pin Definition and Description ______ 6

6.0 Functional Description ___________ 12

6.1 Input Interface ___________________ 12

6.1.1 24-bit RGB_______________________ 13

6.1.2 VAFC___________________________ 13

6.1.3 Feature Connector _________________ 14

6.1.4 Sampling (Pixel) Clock _____________ 14

6.2 Hardware and Software Control Modes

___________________________________ 15

6.3 Video Timing ____________________ 15

6.4 Supported Resolutions _____________ 17

6.5 Flicker Filter _____________________ 18

6.6 Overscan/Underscan Control _______ 18

6.7 Pan and Position Control ___________ 18

6.8 Zoom Feature ____________________ 18

6.9 Frame Buffer Management _________ 19

6.10 Digital Video Encoder ____________ 19

6.11 Push Button Interface/OSD ________ 19

6.12 Memory Control Timing __________ 20

6.13 I

2C Programming ________________ 23

7.0 Electrical Characteristics __________ 26

7.1 Recommended Operating Conditions _ 26

7.2 Characteristics ___________________ 26

8.0 AL128 Register Definition _________ 27

8.1 Index of the Control Registers_______ 27

8.2 Control Register Description________ 28

8.3 AL128 Plug & Play Hardware Table _ 38

9.0 Board Design and Layout

Considerations ______________________40

9.1 Grounding_______________________ 40

9.2 Power Planes_____________________ 40

9.3 Power Supply Decoupling __________ 40

9.4 Digital Signal and Clock Interconnect 40

9.5 Analog Signal Interconnect _________ 41

9.6 Component Placement _____________ 41

10.0 Mechanical Drawing _____________42

11.0 Power Consumption______________44

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