Datasheet

UG-080 Evaluation Board User Guide
Rev. 0 | Page 4 of 12
INTERFACING TO THE EVALUATION BOARD
Interface to the evaluation board is via a standard USB
connector, J51, which connects the evaluation board to
the USB port of a PC. A standard USB connector cable is
included with the AD7170 evaluation board to connect it to
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 can be connected via J6.
Communication between the AD7170 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 AD7170 evaluation board software using the
supplied AD7170 evaluation board CD before connecting
the board to the PC.
2. After the AD7170 evaluation board software is installed,
connect the board to the PC via J1 on the AD7170 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 window
appears as shown in Figure 2, click Continue Anyway to
complete the installation of the AD7170 evaluation board.
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Figure 2. Hardware Installation Window