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Getting Started

6 Getting Started

The following instructions show how to use the LP5522 evaluation kit in default conditions with the USB

interface board. Please use ESD protection to prevent any unwanted damaging ESD events

1. Check the onboard jumpers. VDD should be connected to VDD_USB and jumper J19 should be on.

Removing jumper J19 disconnects LED from GND. ISET can be connected either to VDD or R_ISET.

2. Plug the evaluation board to the USB board. Connect the USB cable to the USB Interface board and to

the USB port of your PC. When you plug in the USB board for the first time, your operating system

prompts you about “New hardware found” and installs the USB driver. With Win95 and Win98

operating systems you have to accept the installation and click “Next” several times as the installation

proceeds.

3. Copy the evaluation software and the support files to your PC’s hard disk. Start the software by

double-clicking its icon. If USB Interface Boards firmware update is required the software prompts you

to allow automatic update.

4. Turn on the LED by bushing the manual button. If system is correctly installed the onboard LED should

be light.

5. The Evaluation Kit is now ready to use and the chip can be controlled through the PC software.

You should disconnect the USB cable from the computer always when plugging in or removing the

evaluation board from the interface board and also when changing the supply jumper settings. Otherwise

the USB board may stop responding.

If the USB board is not responding or the software hangs up, press the reset button on the USB board, or

disconnect the USB cable for 5 seconds.

If the evaluation software notices that the firmware on the USB board needs to be updated, the software

can propose automatic firmware updating. The new firmware will be included in the evaluation kit

software.

SNVA243A–June 2007–Revised April 2013 AN-1636 LP5522 Evaluation Kit

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