AL300 Data Sheets
Version 2.0
AL300
February 20, 2003
2
Amendments
(Since April 2, 1999)
04.02.99 "Section 6.13 Zoom" is added to the document.
04.15.99 Pin 131 is redefined as a GND pin instead of a NC pin. Sections 4.0 and 5.0 are
modified accordingly.
05.11.99 Power consumption data and Programming flowchart are provided.
05.12.99 Registers #06h, 07h, 1Bh, 36h, 4Eh, 50~57h, 66h, 67h, 71h, 85h, 86h, 89h and 8Ah are
modified due to the ver. B change. V
IH
modified.
05.26.99 Pin definition of R/YIN<7:0>, G/UVIN<7:0> and BIN<7:0> is modified to reflect ver. B
change.
06.15.99 Pin definition of odd and even output replaced by B and A.
07.02.99 Register table and some description added and updated.
07.13.99 Added more PLL description in section 6.4 and the register definition 10h and 11h.
08.03.99 Definition of registers 80h, 84h and 88h modified.
08.25.99 Definition of registers 06h, 80h modified. Definition of registers 05h, 19h, 1Ah, 3Bh
and 3Ch modified. Description of #17h and #18h modified.
9.15.99
Added section 6.14, Initialization, modified section 6.7.
9.29.99
Registers #80h and #82h modified to reflect version B-0 change.
10.5.99
Section 10.0 Power consumption updated
8.17.00
Diagram AL300-11 in section "6.11.2 ROM mode" and definition of register 13h & 35h
are modified.
6.27.01
Version 2.0, removed CCIR-656 8-bit interface support from data sheets and add timing
diagram
2.20.03
Company Contact Information updated.
AL300
February 20, 2003
3
Contents
1.0 Features_________________________ 4
2.0 Applications______________________ 4
3.0 General Description _______________ 5
4.0 Pinout Diagrams __________________ 6
5.0 Pin Definition and Description ______ 7
6.0 Functional Description ____________ 12
6.1 Input Data Format ________________ 12
6.2 Scan Mode Detection ______________ 13
6.3 Automatic Positioning Control ______ 14
6.4 Output Clock PLL ________________ 14
6.5 Input/Capture Timing _____________ 17
6.6 Output/Display Timing ____________ 18
6.7 Internal Timing Generator _________ 19
6.8 Zoom Engine _____________________ 20
6.9 Operating Modes _________________ 20
6.9.1 Non-interlaced Zoom Mode __________20
6.9.2 De-interlaced Zoom Mode ___________20
6.9.3 Bypass Mode _____________________21
6.10 Interrupt _______________________ 21
6.11 On Screen Display (OSD) _________ 21
6.11.1 RAM mode ______________________23
6.11.2 ROM mode ______________________23
6.11.3 OSD Timing _____________________24
6.11.4 OSD Bitmap/Font Formatting________25
6.12 Output Data Format _____________ 27
6.13 Zoom __________________________ 27
6.14 Initialization ____________________ 28
6.15 I
2
C Programming ________________ 28
7.0 Electrical Characteristics __________ 31
7.1 Recommended Operating Conditions 31
7.2 Characteristics ___________________ 31
7.3 Timing Diagram __________________ 32
8.0 AL300 Register Definition _________ 33
8.1 Register Description _______________ 37
8.2 Programming Flowchart ___________ 61
9.0 Mechanical Drawing ______________ 61
9.0 Mechanical Drawing ______________ 62
10.0 Power Consumption _____________ 63
AL300
February 20, 2003
4
AL300
LCD Monitor Controller
1.0 Features
Converts PC's or TV's signals for flat panel
displays
Supports active matrix up to 1280x1024
resolution
De-interlacing support for video inputs
Automatic screen positioning support
Fully programmable zoom ratios
Independent linear zoom in H and V
directions
Supports single and dual pixel per clock
panels
Dithering logic to enhance color resolution
for 12-bit or 18-bit panels
Built-in high speed PLL
User-definable font table supporting
different languages and font sizes
Two built-in OSD windows
I
2
C programmable
No external memory required
Single 3.3 volt power with 5 volt tolerant I/O
160-pin 28x28 mm PQFP package
2.0 Applications
TFT LCD Monitor
LCD TV
LCD Projector with PC and/or TV Input
Other Flat Panel Displays
TV to PC Monitor Scan Converter
Progressive Scan TV
Color Space
Converter
Zoom
Engine
Memory
Gamma
LUT
Dithering
OSD
Panel
Interface
Scan Mode
Detection
Timing
Generator
IIC
Interface
PLL
Panel
Font Table ROM
Microcontroller
OCLK
Control
Timing
Control
Registers
HSYNC
VSYNC
CLK
Input Video/
Graphics
Data
AL300-01 Functional Block Diagram
AL300
February 20, 2003
5
3.0 General Description
The AL300 is designed to enable simple connection from PC's or video devices to flat panel displays.
It provides LCD/PDP monitor and projector manufacturers with a low-cost, easy solution to bring TV
or PC video to LCD panels.
The AL300 is equipped with a high quality zoom engine that automatically maintains full screen
output display, regardless of the resolution of the incoming signal. The input video can be linearly
and independently zoomed in the x and y directions. The AL300 also provides de-interlacing,
filtering, and scaling support for interlaced video to be displayed on a LCD panel.
Two integrated On Screen Display (OSD) windows provide overlay of a control menu, text, or
caption on the output display. With the internal OSD RAM, OSD bitmaps of up to 8K pixels are
supported. With optional external user-defined font table ROM, the AL300 OSD functionality is very
flexible with font size and display location; virtually all languages and fonts are supported. Special
OSD effects such as translucency and blinking offer the manufacturer a unique and vivid way of
presenting monitor status, control menu, or other display information.
Used with an AL875 (high speed 3-channel ADC with PLL, 100-pin QFP), the AL300 (in 160-pin
QFP) offers the best cost-performance and total solution for LCD monitors or projectors, or other flat
panel devices.
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