EVAL-AD7360(L)EB

REV. 0

– 5 –

When the DSP program is running the user can click

Take Samples. This will cause the the PC to send a com-

mand to the DSP on the evaluation board. The DSP will

bring the SE and RESET lines of the AD73360(L) high

and begin programming the device. The AD73360(L) is

configured in Frame-Sync Loop Back and is programmed

to operate in Data Mode. After allowing some time for the

reference to settle the AD73360(L) will store the required

number of samples to the data memory of the DSP. Once

completed the DSP will bring the RESET and SE of the

AD73360(L) low and begin uploading the data to the PC.

When the data has been transferred the PC will graph the

data and calculate the FFT. It should be noted that the

number of channels selected at the top of the demonstra-

tion window should match the number of ADC channels

powered up on the AD73360(L).

THE BASIC MODE SCREEN

The Basic Mode Screen as shown in Figure 2 allows the

user to download their own programs to the evaluation

board, send it commands and upload data memory for

saving or analysis.

Downloading Programs

The user has the option of downloading a program to the

evaluation board in one of two ways. The first is to down-

load the program but not to run it until the Run button is

clicked. The second is to download and automatically run

the program. If the user is using a modified version of the

BASIC.DSP program the LED on FL2 will flash a num-

ber of times to indicated that the program has been down-

loaded and run successfully.

Sending Commands

A command can be sent to the evaluation board which can

be used to determine which action is to be performed. The

command is made up of an Identifier Byte and a 16 bit

Control Word. The Identifier Byte is stored in data

memory location 0x3FDB and the Control Word is stored

in data memory location 0x3FDA. The BASIC.DSP pro-

gram will read the Identifier Byte and flash the LED that

number of times.

Uploading Data

If the user has acquired ADC data from the AD73360(L)

which is stored in data memory it can be uploaded to the

PC. Clicking the Upload Data button will display the

screen shown in Figure 6. The user can select the start

address and the number of words to upload. The uploaded

data can be saved to a file or to a list box on the Basic

Mode Screen. The user also has the option to save/display

the data in decimal or hexidecimal format.

Reset Board

This button allows the user to reset the evaluation board if

required.

Get Software Version

This button will read the version number of the boot pro-

gram which is store on the evaluation board. This is a

useful indication that the communication routines are fully

working as it involves 2-way communication to be suc-

cessful.

Figure 6. the Upload Data Screen