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Part: MAX4455EVSYS
Category:
Data Conversion
-> ADC (Analog to Digital Converters)
Description: MAX4455EVKIT, MAX4455EVSYS Evaluation Kit/evaluation System For The MAX4455
Company: Maxim Integrated Products
Datasheet: Download MAX4455EVSYS datasheet File size : 242 kB
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Datasheet text preview:
19-2506; Rev 1; 10/02
MAX4455 Evaluation Kit/Evaluation System
General Description
The MAX4455 evaluation kit (EV kit) is an assembled a n d tested circuit board that demonstrates the MAX4455 arbitrary graphics on-screen display video generator. Windows® 98 software provides a handy user interface to exercise the features of the MAX4455. (Windows 2000 is supported, but at a severely reduced data rate.) O r d e r the complete evaluation system (EV system) (MAX4455EVSYS) for comprehensive evaluation of the MAX4455 using a PC and the recommended crosspoint switch. A bidirectional parallel port is required. Order the EV kit (MAX4455EVKIT) for use with other userdefined external solutions.
Windows is a registered trademark of Microsoft Corp.
Features
o Character Generation Using Fonts from Host PC o Demonstration Software and Test Patterns Included o Proven PC Board Layout o Convenient On-Board Test Points o Fully Assembled and Tested
Evaluate: MAX4455
Ordering Information
PART MAX4455EVSYS MAX4455EVKIT TEMP RANGE DESCRIPTION 0°C to +70°C 0°C to +70°C Complete system Requires user-supplied fast mux switch*
MAX4455EVSYS Component List
PART MAX4455EVKIT MAX4358EVKIT QTY 1 1 DESCRIPTION 8-channel on-screen display 32 × 16 crosspoint switch
*Refer to the MAX4455 data sheet.
EV Kit Component List
DESIGNATION C1C17, C19, C21, C22, C24C29, C31, C48 C23, C30, C57 C18 C20 C32, C35, C36, C39, C40, C43, C44, C47 C33, C34, C37, C38, C41, C42, C45, C46 C49C56 J5 J6 JU1JU8 JU9 JU9 R1 QTY DESCRIPTION 0.1µF ±10%, 10V ceramic capacitors (0402) 330µF ±20%, 10V low-ESR capacitors (case R) 390µF ±20%, 6.3V low-ESR capacitor (case R) 0.01µF ceramic capacitor (1206) U4 8 470pF ±10%, 50V ceramic capacitors (0402) U4, Y1 8 0 1 1 0 1 1 1 0.047µF ±10%, 10V ceramic capacitors (0402) Leave open 2 × 25 right-angle header 2 × 13 right-angle header Leave open 2-pin jumper Shunt 10k ±1% resistor (1/4W axial leaded) None 1 VSYNC0 VSYNC7 Y1 None None None None 8 8 0 1 1 1 1 1 DESIGNATION R2R9 28 R10R17 TB1 U1 3 1 1 U2 U3 QTY 8 8 2 1 1 1 DESCRIPTION 75 ±1% SMT resistors (0402) 430 ±5% SMT resistors (0402) 6-position terminal blocks MAX4455ECQ Dynamic RAM Micron MT48LC1M16A1TG-7S MAX8867EUK33 Full-size crystal oscillator ICM International Crystal Manufacturing Corp., Inc. Catalog IT1100FSS, custom 40.5MHz, 3.3VDC Socket pins BNC female jacks Leave open PC board MAX4455 EV kit software CD-ROM MAX4455 data sheet MAX4455 EV kit data sheet DB25 IDC plug connector with 6ft ribbon cable Digi-Key M7PXG-2SO6J or equivalent
________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
MAX4455 Evaluation Kit/Evaluation System Evaluate: MAX4455
Quick Start
Recommended Equipment
Before you begin, the following equipment is needed: · Dual-output DC power supply, ±5V at 500mA · Computer running Windows 98/2000, with a bidirectional or ECP parallel port · Video signal sources (such as cameras) · Video monitor(s) · MAX4455 EV kit · MAX4358 EV kit · 25-pin I/O extension cable (included in EV kit) 12) Confirm that the on-screen display is working by selecting the text tool ( ) and then clicking in the middle of the large blue display control area. The Character Generator dialog box pops up. Click OK to copy the text to the on-screen display memory. Both the computer and the video monitor should show the k e y / f i l l text. Note: The parallel port interface bandwidth severely limits the graphics transfer rate between the MAX4455 and the host PC.
Table 1. MAX4455 EV System Power Connections
MAX4455 TB1 TERMINAL +3.3V DGND VKEY AGND VCC VH1 MAX4358 TB1 TERMINAL VCC AGND VEE DGND VDD REQUIRED POWER SUPPLY Leave unconnected. Supplied by onboard linear regulator. Digital ground return. OSDFILL power. Connect to +5V supply. Analog ground return. Main power. Connect to +5V supply. Host power. Connect to +5V supply. REQUIRED POWER SUPPLY Connect to +5V supply. Analog ground return. Connect to -5V supply. Digital ground return. Connect to +5V supply.
Procedure
1) Carefully connect the boards by aligning the two rightangle headers of the MAX4455 EV kit with the corresponding headers of the MAX4358 EV kit. Gently press them together. The two boards should be flush against one another. 2) With the power supply off, connect the power supply to the MAX4358 EV kit terminal block TB1 (see Table 1). 3) With the power supply off, connect the power supply to the MAX4455 EV kit terminal block TB1 (see Table 1). 4) Install the EV system software on your computer by running the INSTALL.EXE program on the CD-ROM. The program files are copied and icons are created for them in the Windows Start menu. Note: Windows 2000 requires an extra installation step; refer to file win2000.pdf. 5) Ensure that the MAX4358 jumpers JU1JU4 are open. 6) Turn on the power supply. 7) Connect the 25-pin I/O extension cable between the computer's parallel port and the MAX4358 EV kit. The MAX4358 EV kit includes a suitable 25-pin I/O extension cable. Snap on the included ferrite bead to reduce PC-generated noise from affecting the video boards. 8) Start the program by opening its icon in the Start menu. 9) Connect video signal sources to IN00...IN03 on the MAX4358 EV kit. 10 Connect video displays to OUT00...OUT03 on the MAX4358 EV kit. 11) Confirm that the software successfully connected video source IN00 to video monitor OUT00. The video signal should be visible on the monitor.
Detailed Description of Software
The MAX4455 EV kit software is a simple but effective p a i n t program that draws on the on-screen display memory. There are nine drawing windows: one for each of the eight on-screen display channels, and a master window for simultaneously writing multiple channels. The large blue area represents the on-screen display memory. Each pixel in this area corresponds to one pixel in the on-screen display memory. Transparent areas are blue. The OSDKEY signal is automatically generated for any pixel that is not transparent. The software implements a few simple tools for drawing lines, b o x e s , and text. User-generated graphics can be loaded from standard Windows bitmap files, and the contents of the on-screen display can be saved to a standard Windows bitmap file. Tables 210 describe the buttons found on various toolbars.
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MAX4455 Evaluation Kit/Evaluation System
Loading and Saving Files
T h e MAX4455 on-screen display uses 15-level grayscale patterns. When the MAX4455 EV kit software saves an image as a windows bitmap, each pixel of the on-screen display image is converted from 15-level grayscale into an equivalent RGB value: osd_value &= 0x0F; if (osd_value == 0) { unsigned __int8 red = 0; unsigned __int8 green = 0; unsigned __int8 blue = 255; } else { unsigned __int8 greyscale_nybble = osd_value + 1; double luma = (greyscale_nybble * 256.0 / 16.0); if (luma > 255.0) { luma = 255.0; } if (luma 15+1) { greyscale_nybble = 15+1; } if (greyscale_nybble < 1+1) { greyscale_nybble = 1+1; } osd_control_value = greyscale_nyb ble - 1;
Creating Test Patterns
Simple brightness-gradient test patterns can be drawn interactively using the horizontal or vertical luma bar drawing tool. Click the desired tool button ( or ), and then drag the mouse across the opposite corners of the desired region. The white bar is always drawn near where the mouse is first clicked. All 15 grayscale levels are drawn, and one additional transparent bar is drawn just after the black bar. Custom test patterns can be created using any paint program that can read and write Windows bitmap files. Always start with a pure saturated blue background (RGB value of red = 0, green = 0, blue = 255) for a transparent background. C a p t u r e any program's output by pressing ALT+ PrintScreen, then paste into the Windows Paint program and save as a bitmap. For example: 1) Run the MAX4455 EV kit software. 2) Click the View Channel 0 button ( 3) Draw some luma bars ( palette (optional). or ). ) to use as a drawing
Evaluate: MAX4455
4) Locate your monitor's overscan boundary by pointing the camera at a black field, choose a contrasti n g drawing color ( ) , select the free-hand drawing tool ( ), and drag the mouse around the edges of the on-screen display (optional). 5) Click the Save All button ( screen display memory. ), saving the empty on-
6) Edit the saved bitmap using any suitable paint program. 7) L o a d your newly created test pattern using the Load All button ( ). The test pattern is copied into the on-screen display memory.
Using Shared Memory
The MAX4455 can insert a horizontal band of on-screen display information from a different channel. This example draws vertical bars on channel 0 and horizontal bars on channel 2, then shares part of the channel 0 memory into the channel 2 display. 1) Click the View Channel 0 button ( ). 2) Maximize the window. 3) Click the Vertical luma bars ( ) drawing tool, and drag the mouse from the upper-left corner of the drawing area to the lower-right corner of the drawing area. (Once drawing begins, minimize the window to improve drawing speed.) 4) Click the View Channel 2 button ( 5) Maximize the window. ).
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