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
are controlled by register 07
HEX
. The default values are
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
Display
help
Select Register
or
Set Defaults
Select
Register
Select Message
or
Send Message
Receive
Message
Edit
Value
Read
Value
Edit
Message
Send
Messages
Program flow diagram
2
MAS [ MICRO ANALOG SYSTEMS ]
