January 2008

Rev 1

1/23

UM0460

User manual

Set-top box front panel evaluation board based on

the STLED316S

Introduction

This document explains the operation of the front panel evaluation board based on the

STLED316S that consists of the LED driver/controller STLED316S and microcontroller

ST7LITE39F2 as SPI master. The basic idea is to develop a front panel for set-top boxes

which is very close to the available solutions on the market.

The objective of this evaluation board is to display the capabilities of ST's LED

controller/driver STLED316S to fit the market segment of front panels for HTiB (Home

Theater in a Box), set-top boxes and other applications that require a compact, integrated

solution, keeping the system cost as low as possible.

The system can be operated using the various front panel keys provided on the system.

In the sections that follow the operation of the system is explained. When the board is

connected to the power supply, the system gets ready to perform any operation.

At the time of manufacturing an additional board has been connected to allow in-circuit

programming of the microcontroller. The two can be easily broken apart so that the front

panel board can be used independently.

To summarize, the key features of the evaluation board are:

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