EVAL-AD7793

Rev. 0 | Page 4 of 16

INTERFACING TO THE EVALUATION BOARD

Interfacing to the evaluation board is via a standard USB

connector, J1. J1 is used to connect the evaluation board to

the USB port of a PC. A standard USB connector cable is

included with the AD7793 evaluation board to allow the

evaluation board to interface with the USB port of the PC.

Because the board is powered via the USB connector, there

is no need for an external power supply, although if preferred,

one may be connected via J3.

Communication between the AD7793 and the PC is via the

USB/SPI interface. The on-board USB controller (U2) handles

this communication.

To set up the USB/SPI interface, use the following procedure:

1.

Install the AD7793 evaluation board software using the

supplied AD7793 evaluation board CD before connecting

the board to the PC.

2.

After the AD7793 evaluation board software is installed,

connect the board to the PC via J1 on the AD7793 evaluation

board and via the USB port on the PC using the supplied

USB connector cable. The PC automatically finds the new

USB device and identifies it as the AD779x Evaluation Board.

3.

Follow the on-screen instructions that appear. During the

installation process if the Hardware Installation Wizard

appears as shown in Figure 2, select Continue Anyway

to successfully complete the installation of the AD7793

evaluation board.

Figure 2. Hardware Installation Window