意法半导体汽车音响系统设计参考规格书

Automotive Segment

CAR RADIO REFERENCE PLATFORM

(CAP5)

PRELIMINARY SPECIFICATION

Version 1.0

Author: CRM Application Team June, 2008 ------------------------------------------------------------------------------------------------------------------ This is preliminary data from STMicroelectronics. Details are subject to change without notice.

TABLE OF CONTENT

1. INTRODUCTION (3)

2. MAIN FEATURES (4)

3. SYSTEM OVERVIEW (5)

3.1T OP V IEW (5)

3.2B LOCK D IAGRAM (6)

4. MCU PIN CONFIGURATION AND DESCRIPTION (7)

4.1STM8 PIN OUT (7)

4.2P IN D ESCRIPTION (9)

5. KEY TABLE AND DESCRIPTION (11)

5.1K EY T ABLE (11)

5.2K EY D ESCRIPTION (12)

6. MODE DESCRIPTION (16)

6.1P OWER M ODE D ESCRIPTION (16)

6.2W ORK M ODE D ESCRIPTION (17)

6.2.1 Radio Mode (17)

6.2.2 RDS Mode (19)

6.2.3 Audio Mode (21)

6.2.4 CD/MP3 Mode (24)

7. APPENDIX (26)

7.1S CHEMATIC (26)

7.2PCB L AYOUT (26)

7.3BOM L IST (26)

7.4P LATFORM S YSTEM S OFTWARE (26)

1. INTRODUCTION

This document is meant to show the preliminary specification of the latest car radio platform (CAP5) which is provided by STMicroelectronics for a low cost and high performance total solution of car radio system (Tuner+ RDS + CD/MP3 + CSP + Power Amplifier).

It is for demonstration of ST car radio key devices as well as reference design for customization based on these devices.

2. MAIN FEATURES

•RDS Function

•High-end radio function with tuner(FE+STD), audio processor and power amplifier (TDA7705 or TDA7541/TDA7540 + TDA7419 + TDA7564 )

•CD/MP3 player (DISC+USB+SD)

•AUX input

2.1 RDS Function

•AF, switch to the optimal frequency for current station

•PS, Display Program Service name

•TP, TA, Traffic Program / Traffic Announcement (traffic news detection and auto switch) •PTY, Program Type display and search

•EON, Enhanced Other Networks info, for update AF list and TP/TA(Eon traffic news detection and auto switch)

•REG, Regional mode selection

•CT(Time display if available)

2.2 Tuner Section

•FM1,FM2,FM3, AM1, AM2 Bands

•Auto memory store / Preset scan

•Manual Up/Down

•Seek Up/Down

2.3 CD/MP3 Player

•CD/MP3 WMA player,

•Support USB and SD card

•CD-R, CD-RW playback

•Directory Scan, Repeat, Shuffle

•Next/Previous, FF/FB function

2.4 Audio Section

•Electronic /Rotary Encoder Volume Control

•Bass, Treble, Middle, Balance, Fader Control

•EQ Function: Control the preset equalizer(Classic/Rock /POP)

•Loudness

•Software/Hardware Mute

•4X7W or 4X25W output

•Telephone detection