Cirrus-logic CDB5480U Manuel d'utilisateur télécharger pdf (Page 4)

CDB5480U

4 DS893DB5

1. HARDWARE

1.1 Introduction

The CDB5480U evaluation board provides a convenient means of evaluating the CS5480 energy

measurement IC. The CDB5480U evaluation board operates from a single USB or 5V power supply. An

optional 3.3V power supply input is available for powering the CS5480 directly. The evaluation board

interfaces the CS5480 to a PC via a USB cable. To accomplish this, the board comes equipped with a

C8051F342 microcontroller and a USB interface. Additionally, the CDB5480U GUI software provides

easy access to the internal registers of the CS5480. The software also provides a means to display the

on-chip ADC performance in the time domain or frequency domain.

1.2 Evaluation Board Overview

The board is partitioned into two main sections: analog and digital. The analog section consists of the

CS5480, passive anti-aliasing filters, and a high-voltage section with attenuation resistor networks. The

digital section consists of the C8051F342 microcontroller, LCD, the test switches, the reset circuitry, and

the USB interface. The board also has a user-friendly power supply connection. The assembly information

and default configurations for jumpers are shown below.

Figure 1. CDB5480U Assembly Drawing & Default Configuration

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Cirrus-logic CDB5480U Manuel d'utilisateur Page 4