Quick Start

Recommended Equipment

• Computer running Windows 98, 2000, or XP

• Serial port (this is a 9-pin socket on the back of the

computer)

• Standard 9-pin, straight-through, male-to-female

cable (serial extension cable) to connect the com-

puter’s serial port to the Maxim command module

interface board

• CMOD232 command module with included wall

cube power source

• Two 3.0V/100mA DC power supplies

• One pair of headphones (16

Ω or greater)

• One digital audio S/PDIF signal source

Procedure

The MAX9850 EV kit is fully assembled and tested.

Follow the steps below to verify board operation.

Caution: Do not turn on the power supply until all

connections are completed.

Command Module Setup

1) Enable the SDA/SCL pullup resistors on the com-

mand module by setting both switches (SW1) to the

on position.

2) Set the command module working voltage to 3.3V

by placing a shunt across pins 1-2 of the VDD

select jumper.

3) Connect a cable from the computer’s serial port to

the command module (CMOD232) interface board.

Use a

straight-through 9-pin male-to-female cable.

To avoid damaging the EV kit or your computer, do

not use a 9-pin null-modem cable or any other pro-

prietary interface cable that is physically similar to

the straight-through cable.

4) Connect the provided wall cube power supply to

the CMOD232 board.

EV Kit Setup

load the latest version of the EV kit software,

9850Rxx.ZIP. Save the EV kit software to a tempo-

rary folder and uncompress the ZIP file.

2) Install the EV kit software on your computer by run-

ning the INSTALL.EXE program inside the tempo-

rary folder. The program files are copied and icons

are created in the Windows Start | Programs

menu.

to 0x20h by verifying that a shunt is placed across

pins 1-2 of jumper JU1.

4) Ensure that a shunt is installed on jumper JU2

5) Connect the first 3.0V power supply to the DVDD

and corresponding GND pads.

6) Connect the second 3.0V power supply to the

PVDD and corresponding GND pads.

7) Connect the S/PDIF signal source to either J2 (opti-

cal) or J7 (electrical)

8) Insert a pair of 16

Ω headphones into the head-

phone jack J8.

9) Carefully align the 20-pin connector of the

MAX9850 EV kit with the 20-pin header of the

CMOD232 interface board. Gently press them

together.

10) Plug the CMOD232 wall cube into an electrical outlet.

11) Turn on both of the 3.3V power supplies

12) Enable the stereo audio sources.

13) Start the MAX9850 program by opening its icon in

the Start | Programs menu.

14) Normal device operation can be verified by

the “Status: MAX9850 Operational” text in the

Interface box.

15) To autoconfigure the MAX9850 in a functional state,

use the “auto setup” feature in the MAX9850 software.

MAX9850 Evaluation System/Evaluation Kit

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3

FILE

DESCRIPTION

INSTALL.EXE

Installs the EV kit files on your computer

MAX9850.EXE

Application program

UNINST.INI

Uninstalls the EV kit software

MAX9850 EV Kit Files