2

DA9191EB.006

June 30,1997

SYSTEM REQUIREMENTS

For the complete evaluation of MAS9191A, MAS9129 and MS8323 ICs the following equipment is needed:

•

Cellular Baseband Evaluation Board

•

NiCd/NiMH Battery or DC power supply (3.4 to 9.0 VDC)

•

Battery charger (9.0VDC/265mA)

•

Radio test system (e.g. Marconi 2965)

•

RF parts for AMPS/TACS/NAMPS cellular phone or a radio test system with an IF interface

•

PC with RS-232-C interface with serial cable (optional)

START UP

Connect the supply voltage or a battery to plus and

minus battery terminals. Turn on switch S1 to power

up the board. The power

consumption

of

the

MAS9129 regulators can be measured by inserting an

ammeter between the pins at CM1 and CM2. After

powering up the system, the installed evaluation

software sets up and the evaluation board is now

ready for use. The power down modes of MAS9191A

set by entering Register Write. See the Register write

function in the next section. Rough testing of the

microphone, earphone, and buzzer interfaces can be

done with the MAS9191A internal loop back modes.

For more detailed evaluation, a radio test set is

needed. The board is assembled so that the micro

controller will operate at 8.0 MHz. The micro controller

can also be operated at 4.8 MHz by inserting jumper

P6 and disconnecting parts X2, R23, C50 and C51.

Current consumption of MAS9191A is measured at

jumper CM3.

EVALUATION SOFTWARE

The evaluation software has the following features:

- write function for changing the values of the MAS9191A registers

- read function for reading the values of the MAS9191A status registers

- message send

- message receive

A keypad serves as the software interface.

The key definitions are as follows:

- BACKWARD = 4

- TOGGLE

= 5

- FORWARD

= 6

- EXIT

= *

- ENTER

= #

- UP

= 2

- DOWN

= 8

After a reset the internal registers of the MAS9191A

are set to zero and the program returns to the main

menu, which will display the following message on the

LCD:

MAS9191EB

Press # for HELP

MAIN MENU

HELP

Register

Write

Register

Read

Message

Send

Message

Receive

Select Register

or

Set Defaults

Edit

Value

Select

Register

Read

Value

Display

help

Receive

Message

Edit

Message

Send

Messages

Select Message

or

Send Message

Program flow diagram