Cirrus Logic CRD7410-CD18 User's Guide

CRD7410-CD18 User’s Guide

http://www.cirrus.com

Release 1.2

Feb ‘04

DS620UMC2

Contacting Cirrus Logic Support

For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you go to www.cirrus.com

IMPORTANT NOTICE

Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order ackn owledgm ent, including those pertaining to warranty, patent infringem ent, and limitation of liability. No responsibility is assumed by C irrus for the use of this inform ation, including use of this inform ation as the ba sis for manufacture o sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

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Table of Contents

Chapter 1 CRD7410-CD18 Board Architecture .......................................... 7

1.1 Overview ......................................................................................................................................... 7

1.1.1 Main Subsystems .................................................................................................................. 7

1.2 Main Subsystems.......................................................................................................................... 10

1.2.1 Decoder Subsystem ............................................................................................................ 10

1.2.2 Audio Subsystem.................................................................................................................11

1.2.2.1 Internal DAC............................................................................................................... 11

1.2.2.2 Subsystem Design Details ......................................................................................... 11

1.2.3 User Interface Subsystem ................................................................................................... 12

1.2.3.1 LCD Display ............................................................................................................... 12

1.2.3.2 Button and Switch Matrix ...........................................................................................13

1.2.4 CD Loader Subsystem ........................................................................................................14

1.2.5 Power Subsystem................................................................................................................16

1.2.6 Debug Interface ................................................................................................................... 17

1.2.7 Jumpers and Switches ........................................................................................................ 18

Chapter 2 User Menu Selections............................................................... 19

2.1 User Interface................................................................................................................................19

2.1.1 Start-up................................................................................................................................ 20

2.1.1.1 Default Start-up Mode ................................................................................................21

2.1.2 Display................................................................................................................................. 24

2.1.3 Main Menu ........................................................................................................................... 27

2.1.3.1 Menu Options.............................................................................................................32

2.1.3.1.1 Power-off Mode ................................................................................................ 33

2.1.3.1.2 Normal Mode .................................................................................................... 33

2.1.3.1.3 Navigator Mode ................................................................................................ 35

2.1.3.1.4 Playlist Selection Mode ....................................................................................37

2.1.3.1.5 Playlist Creation Mode...................................................................................... 38

2.1.3.1.6 Menu Mode, in a Menu List .............................................................................. 39

2.1.3.1.7 Menu Mode, in a Setting Screen ...................................................................... 40

2.1.3.1.8 Menu Mode, in the User EQ Setting Screen ....................................................41

List of Figures

Figure 1-1. Board, Top View ................................................................................................ 8

Figure 1-2. Board, Bottom View ........................................................................................... 9

Figure 1-3. Detail View of the Decoder Subsytem .............................................................. 10

Figure 1-4. Detail View of the Audio Subsystem ................................................................. 11

Figure 1-5. Detail View of the LCD, from the Processor Board .......................................... 12

Figure 1-6. Detail View of the Button and Switch Matrix, from the Processor Board .......... 13

Figure 1-7. Detail View of the CD Loader Subsystem, Front of Board ............................... 14

Figure 1-8. Detail View of the CD Loader Subsystem, Back of Board ................................ 15

Figure 1-9. Detail View of Part of the Power Subsystem .................................................... 16

Figure 1-10. Detail View of the Debug Interface ................................................................. 17

Figure 2-1. Power-on Screen .............................................................................................. 20

Figure 2-2. Checking for Update Files Screen .................................................................... 21

Figure 2-3. Loading Updated Firmware Screen .................................................................. 21

Figure 2-4. Bad Disc Screen ............................................................................................... 21

Figure 2-5. Normal Operation Screen ................................................................................. 21

Figure 2-6. Display Screen Format - Default Mode ............................................................ 22

Figure 2-7. Display Screen Format - Default Mode ............................................................ 24

Figure 2-8. Play/Pause Screen ............................................................................................ 24

Figure 2-9. Volume Changing Screen ................................................................................. 25

Figure 2-10. Equalizer Setting Screen ................................................................................ 25

Figure 2-11. Navigator Mode Screen .................................................................................. 26

Figure 2-12. Playlist Selection Mode Screen ...................................................................... 26

Figure 2-13. Playlist Loading Screen ................................................................................... 26

Figure 2-14. Playlist Creation Mode Screen ....................................................................... 27

Figure 2-15. Main Menu Screen .......................................................................................... 27

Figure 2-16. Electronic Shock Protection (ESP) Submenu Screen .................................... 28

Figure 2-17. Backlight Submenu Screen ............................................................................. 28

Figure 2-18. Lyrics Submenu Screen .................................................................................. 29

Figure 2-19. Resume Submenu Screen .............................................................................. 29

Figure 2-20. Scrolling Submenu Screen .............................................................................. 29

Figure 2-21. Power Off Time Submenu Screen................................................................... 30

Figure 2-22. Sleep Timer Submenu Screen ........................................................................ 30

Figure 2-23. 3D Enhancement Submenu Screen ................................................................ 30

Figure 2-24. User EQ 60 Hz Submenu Screen ................................................................... 30

Figure 2-25. User EQ 150 Hz Submenu Screen ................................................................. 31

Figure 2-26. User EQ 400 Hz Submenu Screen.................................................................. 31

Figure 2-27. User EQ 1 kHz Submenu Screen.................................................................... 31

Figure 2-28. User EQ 2 kHz Submenu Screen.................................................................... 31

Figure 2-29. User EQ 6 kHz Submenu Screen.................................................................... 31

Figure 2-30. User EQ 15 kHz Submenu Screen.................................................................. 32

Figure 2-31. Order Tracks Submenu Screen....................................................................... 32

List of Tables

Table 1-1: Button and Switch Matrix .................................................................................... 13

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6 CRD7410-CD18 User’s Guide - DS620UMC2

Chapter 1

1.1 Overview

1CRD7410-CD18 Board Architecture

This document describes a reference design platform for the Cirrus Logic CS7410, known as the CRD7410-CD18. It is an evaluation platform for a basic portable CD player. The CRD7410-CD18 platform provides a low-cost yet complete solution for today’s popular digital music formats (CDDA, MP3, WMA, VCD, AVCD, and SVCD). The platform also supports poprular music playlist formats such as MP3, M4U, PLS, B4S, and RMP. The system’s small size, light weight, and low power consumption allow designers to integrate powerful features into a very inexpensive portable device. The design is also easily adapted to small bookshelf systems.

All components necessary for a portable CDDA/MP3/WMA/VCD/AVCD/SVCD application, including a 4-line LCD display, are incorporated into a single PCB. Debug capability is provided adjacent to the main circuitry. In a final design, the I2C debug and Romulator ports could easily be eliminated, leaving only the circuitry required for the application. Refer to Figure 1-1.

Cirrus Logic provides the system as a complete solution. Schematics and Gerber data files for the PCB are available.

1.1.1 Main Subsystems

The CRD7410-CD18 has seven main subsystems. They are:

• Decoder

• Audio

• User Interface Subsystem

• CD Loader

• Power

• Debug Interface

• Jumpers and Switches

CRD7410-CD18 Board Architecture

Figure 1-1. Board, Top View

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Figure 1-2. Board, Bottom View

CRD7410-CD18 Board Architecture

1.2 Main Subsystems

1.2.1 Decoder Subsystem

This system uses the Cirrus Logic CS7410 for main control and audio decode. (See U6 in Figure 1-3, below.)

A Flash/ROM is used for application code. (See U7 in Figure 1-3, below.)

An SDRAM is provided for Electronic Shock Protection (ESP). (See U8 in Figure 1-3, below.)

Figure 1-3. Detail View of the Decoder Subsytem

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1.2.2 Audio Subsystem

CRD7410-CD18 Board Architecture

1.2.2.1 Internal DAC

An integrated Sigma-Delta based DAC (Digital-to-Analog-Converter) allows the designer to build a low cost DAC with a simple RC integration circuit. In such a design, proper layout permits greater than 80 dB SNR.

1.2.2.2 Subsystem Design Details

Figure 1-4 shows the details of the implementation of this subsystem design. This list below defines the semiconductor devices and connectors used in this subsystem, and the function of each.

• U11 - Op Amp - LMV358

• U12 - Headphone Amp - LM4911

• J9 - 1/8 in. Headphone Jacks

• J8 - Line Out Jack

Figure 1-4. Detail View of the Audio Subsystem

Bottom View

Top View

CRD7410-CD18 Board Architecture

1.2.3 User Interface Subsystem

The User Interface Subsystem has two sections: the LCD (Liquid Crystal Display) and the Button and Switch Matrix. (See Figure 1-5 and Figure 1-6, below for details.)

1.2.3.1 LCD Display

Figure 1-5 shows a close-up view of the LCD, which is part of the User Interface Subsystem.

The LCD display (reference designator - DSP1) is a 64 x 128 pixel display. For a dot matrix character size of 8 x 6, this gives 21 characters per line, by 8 lines per display.

Figure 1-5. Detail View of the LCD, from the Processor Board

12 CRD7410-CD18 User’s Guide - DS620UMC2

CRD7410-CD18 Board Architecture

1.2.3.2 Button and Switch Matrix

Figure 1-6 shows a close-up view of the Button and Switch Matrix, which is part of the User Interface Subsystem.

User inputs are implemented with 12 push buttons. There is one switch for power On/Off (when power is supplied by the battery).

Table 1-1 shows the functions of the pushbuttons and switch shown in Figure 1-6.

Figure 1-6. Detail View of the Button and Switch Matrix, from the Processor Board

Note: When the power is on, pushbutton S1 must be pressed to activate the system.

Table 1-1: Button and Switch Matrix

S1:

Play/Pause/Up

S5:

Select

S9: 10+

Power On/Off (when power is supplied by the battery).

S2:

Stop/Down

S6:

Navigator/Menu

S10:

SW1:

S3:

Previous/Left

S7:

Mode

S11: Vol+

S4:

Next/Right

S8:

A->B/Program

S12:

Vol -

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