MAX4455EVSYS データシートの表示（PDF） - Maxim Integrated

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MAX4455EVSYS

MAX4455 Evaluation Kit/Evaluation System

Maxim Integrated 

MAX4455 Evaluation Kit/Evaluation System

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 bidirec-

tional 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)

Procedure

1) Carefully connect the boards by aligning the two right-

angle headers of the MAX4455 EV kit with the corre-

sponding 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 JU1–JU4 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 exten-

sion 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.

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

key/fill 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

REQUIRED POWER SUPPLY

+3.3V

DGND

Leave unconnected. Supplied by on-

board linear regulator.

Digital ground return.

VKEY

OSDFILL power. Connect to +5V supply.

AGND

VCC

VH1

MAX4358

TB1 TERMINAL

VCC

AGND

VEE

DGND

VDD

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.

Detailed Description

of Software

The MAX4455 EV kit software is a simple but effective

paint 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 soft-

ware implements a few simple tools for drawing lines,

boxes, 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 2–10 describe

the buttons found on various toolbars.

2 _______________________________________________________________________________________

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