3

Preliminary

Introduction:

The ES521 evaluation system allows testing of all features of the chip and visually shows the

signal flow through the chip.

Writing to three 16-bit configuration registers sets up the signal flow. An active path is highlighted

in blue while the gray arrows show possible but not currently active paths.

The main application window allows playback and record of analog audio as well as setting up

the configuration registers.

There are three ways to set the configuration registers,

•

Change the controls on the main window until the desired signal flow is highlighted in

blue.

•

Type in values in the configuration register boxes in the top left window, the signal flow

will be updated to show the current signal path.

•

Select a path from the Path menu.

The various play and record buttons allow playback and record either from a supplied address or

the current location of the address pointer. Pressing the ‘Read Status’ button retrieves the

address pointer.

The program also supports reading and writing digital data by selecting the ‘Digital’ menu in the

menu bar.

Content of the ES521 evaluation kit:

The evaluation system package contains an Evaluation Board (batteries included) and a CD

ROM with the following items:

•

User’s Guide

•

Self installing application software

•

Data sheets