3

DA9191EB.006

June 30,1997

EVALUATION SOFTWARE

x Help

Pressing “#" will display instructions for the keys

shown on the LCD. Press EXIT to return to the main

menu.

x Main menu

The FORWARD and BACKWARD keys will select

“register read”, “register write”, “message send” or

“message read”. The given function is executed by

pressing ENTER.

x Register write

When entering this function the register address will

be shown at the top right. After entering the write

function, pressing “#' will automatically set the default

values (gain controls at nominal levels and necessary

switches in proper positions) to measure the transmit

and

receive

frequency

responses.

The

register

address can be changed with the FORWARD and

BACKWARD keys. The lower line will show

the

current contents of the register. Press EXIT to return

to the main menu. The ENTER key will remove the

brackets around the register address and the cursor

will move to the first nibble of the hex byte on the

lower line. The UP and DOWN keys will increment or

decrement the nibble. If the value of the register has

been changed there will be an asterisk next to the

register address. The FORWARD and BACKWARD

keys will move the cursor left and right, respectively.

When the cursor points to a bit of a register the

TOGGLE key will change the value of the bit. After a

bit has been edited the top line will display the function

of the bit. The ENTER key will write any new values to

the MAS9191A. Press EXIT to exit from the editing

mode. If the function is terminated without writing any

new values, the previous values are retained.

x Register read

This function is quite similar to the register write

function. The register address is selected

with

FORWARD and BACKWARD keys from the main

menu. The register can be read with the ENTER key.

Pressing the ENTER key a second time will update

the contents of the status register. The FORWARD

and BACKWARD keys will move the cursor and

display the function of each bit. Return to the top line

or to the main menu with the EXIT key.

x Message receive

This function waits for 10 messages to be received.

When the messages are received they can be

examined with the FORWARD and BACKWARD

keys. The function can be terminated with the EXIT

key. An >N= in the upper right hand corner indicates

NAMPS mode.

x Message send

In this function six messages can be entered. First the

desired message number must be chosen with the

FORWARD and BACKWARD keys. Then the ENTER

key will advance

to

the

edit

mode.

With

the

FORWARD and BACKWARD keys the nibbles of

each byte can be chosen and the value incremented

or decremented with the UP and DOWN keys. The

ENTER key will store the message into memory. The

EXIT key will move the cursor to the upper row. After

all messages are edited the LCD reads "SEND

MESSAGES". The ENTER key will move the cursor to

the lower row and the FORWARD and BACKWARD

keys will choose the message. The TOGGLE key will

alternate between the plus and minus signs. The plus

sign indicates that the message will be transmitted.

When all messages are chosen the ENTER key will

start the transmission, and may be done repeatedly.

The transmission can be terminated with the EXIT

key. An >N= in the upper right hand corner indicates

NAMPS mode.

xMicro Controller and Interfaces

The 68HC11 micro controller can be reset with the

reset button, with DTR or by switching power off and

on. In the last case the voltage regulator internal reset

circuit will perform the reset. When the MOD jumper is

open the controller executes the software from the

FLASH ROM. When the jumper is closed the

controller enters the boot-strap mode after reset. In

this mode the software which contains the hl.exe

program can be loaded into the FLASH ROM or

SRAM through the RS-232-C interface. The syntax of

the software is:

el [-p<X>] <filename>

Where X is the serial port number: 1 for COM1 and 2

for COM2 and the file name is the same as the

S-record file without the extension. For downloading

the serial cable with the following connections are

needed:

PC

MAS9191A

2

-----

2

3

-----

3

7

-----

7

20 -----

20

More information about the 68HC11 is available from

the reference manual.

P9 contains six inputs to the micro controller port PE.

These inputs can be used as digital inputs or as

analog inputs for the A/D-converter.

When the micro controller is writing to address

0x1FFC and 0x1FFD the data is also written to the

LCD command register. Write cycles to memory

address 0x1FFD also change the state of the port at

0x1FFE. The port has eight outputs, ground and

supply voltage. The maximum load for the power

supply pin is 20 mA when operating at 3V. Keypad

interface is done with port PA. Pins PA0, PA1 and

PA2 are inputs from the 4x3 keypad and pins

PA3-PA6 are outputs to the matrix. PA7 is the output

pulse for MAS9129 watchdog circuit. All PA outputs

are driven with the external buffer IC3.