UM1545 datasheet(12/64 Pages) STMICROELECTRONICS

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APW walkthrough

UM1545

12/64

Doc ID 023225 Rev 1

APW walkthrough

2.1

Introduction

This chapter will guide the user through many of the controls and features offered by the

APWorkbench. Before proceeding with the following paragraphs an important concept has

to be clarified. For each supported device, the APW has an internal registers bank and a

coefficients bank (which will be referred to from now on as local banks), that reproduce the

banks contained in the device (which will be referred to from now on as device banks). It is

up to the user to decide how to handle the local and the device banks by setting the Auto

Apply and the Auto Retrieve preferences. The consequences and the advantages of these

choices will be thoroughly explained in Section 2.2: Preferences. Please note that the

registers bank and the coefficients bank contain all the information needed to completely

describe the device setup. Nevertheless, the APW also uses a third structure called filter

bank. Starting from the filter’s coefficients, this bank stores the filter’s setup in terms of each

filter’s qualitative parameters (gain, cutoff frequency, filter type, etc…). From now on the

ensemble of the registers bank, coefficients bank and the derived filters bank will be

considered and referred to as the device configuration.

2.2

Preferences

The Preferences dialog allows customizing the behavior of the APW in order to fit the needs

of every user. Select the Tools menu and left click on Preferences to show the dialog

(Figure 6).

The dialog should appear as shown in Figure 7. It can be divided into three main areas. The

left top side of the dialog groups all the controls concerning the tracing preferences

(highlighted in red).

Figure 6.

Tools menu, preferences

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