AN610 Datasheet, PDF(1/71 Page) Vishay Siliconix – PolarPAK Solder Joint Reliability Based on Thermal Fatigue IPC-9701

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AN610 Datasheet, PDF (1/71 Pages) Vishay Siliconix – PolarPAK Solder Joint Reliability Based on Thermal Fatigue IPC-9701

AN610

Si48XX ATDD PROGRAMMING GUIDE

1. Introduction

1.1. Scope

This document provides an overview of the programming requirements for the Si4822/26/27/40/44 analog tune

digital display (ATDD) AM/FM/SW receiver. The hardware control interface and software commands are detailed

along with several examples of the required steps to configure the device for various modes of operation.

2. Overview

The Si4822/26/27/40/44 family of products is programmed using commands and responses. To perform an action,

the system controller writes a command byte and associated arguments, causing the device to execute the given

command. The device will, in turn, provide a response depending on the type of command that was sent. Section

â6. Commands and Responsesâ and Section â7. Commands and Propertiesâ describe the procedures for using

commands and responses and provide complete lists of commands, properties, and responses.

The device has a slave control interface that allows the system controller to send commands to and receive

responses from the device using 2-wire mode (I2C and SMBUS compatible) serial protocol (or bus modes).

The following sections provide guidelines for programming the ATDD device:

ï®ï Section "4. ATDD Device Overview" on page 4 gives an overview of the ATDD device.

ï®ï Section "5. ATDD Device Power On/Off and Band Switch Overview" on page 7 gives an overview of the

Power on / off and the band switching sequencing for the ATDD device.

ï®ï Section "8. Control Interface" on page 55 describes the control interface in details.

ï®ï Section "9. Powerup" on page 58 describes the options for the sequencing of VDD and VIO power

supplies, provision of the reference clock, RCLK, and sending of the ATDD_POWER_UP command.

ï®ï Section "10. Powerdown" on page 59 describes sending of the POWER_DOWN command and removing

VDD and VIO power supplies as necessary.

ï®ï Section "11. Programming Example" on page 60 provides the flowcharts and step-by-step procedures for

programming the device.

Note: The ATDD family has its own power up and getting status commands which are different from previous Si47xx DTDD

family. To differentiate, we use âATDD_POWER_UPâ and ATDD_GET_STATUS to denote the ATDD specific commands

instead of the general Si47xx âPOWER_UPâ and âSTATUSâ commands.

Rev. 0.3 3/13

AN610

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