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Texas Instruments TRIS TMS37122 User Manual

Texas Instruments TRIS TMS37122
73 pages
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1
August ’01 Chapter 3. Application
TIRIS Automotive Devices
Analog Front End IC TMS37122
Reference Guide
11-09-21-046 August 2001

Table of Contents

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Texas Instruments TRIS TMS37122 Specifications

General IconGeneral
BrandTexas Instruments
ModelTRIS TMS37122
CategoryComputer Hardware
LanguageEnglish

Summary

About This Guide

Conventions

Product Description

General Features

Lists the main features of the Analog Front End IC for RF Identification Systems.

Circuit Description

Describes the architecture and functionality of the 3D-Analog Front End (AFE) circuit TMS37122.

Electrical Description

Power Supply

Details the VBAT supply options, including standard, rechargeable, and battery backup.

Control Unit

Details the Control Unit's states, modes, and interactions for device operation.

Configuration Memory

Details the organization, default content, and programming of the device's EEPROM configuration memory.

Resonant Circuit Trimming

Explains the process of trimming resonant circuits for optimal frequency and performance.

Application

Passive Entry Function

Describes the Passive (Keyless) Entry function of the 3D-AFE.

Passive Start Function

Describes the Passive Start function for engine start and other applications.

Battery Backup Function

Explains the Battery Backup function and its operation with LF transmission.

Immobilizer Function

Describes the Immobilizer function, potentially replacing a TIRIS Transponder.

Anti-Collision Function

Addresses the issue of simultaneous UHF Responses from multiple devices.

Product Specification Data

Absolute Maximum Ratings

Lists the absolute maximum ratings for operating and storage conditions.

Recommended System Operating Conditions

Specifies recommended operating conditions for the system and device.

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