Cirrus-logic CDB3318 Bedienungsanleitung PDF herunterladen

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Evaluation Board for CS3318

Features

 Single-ended Analog Inputs

 Single-ended Analog Outputs

 Supports AC and DC-Coupled Analog I/O

 Flexible Serial Control I/O Headers

– Serial Control Input Header to

Accommodate On-board and External

Serial Controllers

– Serial Control Output Headers for

“Chaining” Serial Control Across Multiple

CDB3318 Evaluation Boards

– 3.3 V Logic Interface Level

 Demonstrates Recommended Layout and

Grounding Arrangements

 Minimal Power Supply Requirements

– ±8 V to ±9 V and Ground

 Windows

Compatible Software Interface

– Easy and Intuitive Graphical Interface to

Channel and Master Volume Controls

– Supports USB and RS-232 PC

Connectivity

Description

The CDB3318 evaluation board is an excellent means

for evaluating the CS3318 analog volume control. Eval-

uation requires an analog signal source and analyzer,

power supplies, and a Windows PC compatible

computer.

Standard RCA phono jacks are provided to easily inter-

face external analog signals with the evaluation board.

Each of the CS3318’s inputs and outputs may be inde-

pendently AC or DC-coupled to their respective I/O

connectors.

The Windows software provides a GUI to make config-

uration of the CDB3318 easy. The software

communicates through the PC’s USB or Serial port to

configure the control port registers so that all features of

the CS3318 can be evaluated.

As an alternative to the serial control provided via a PC,

the evaluation board may be configured to accept exter-

nal control signals for operation in a user application

during system development.

To facilitate multi-CS3318 system design efforts, head-

ers are provided for connecting serial control signals

between multiple CDB3318 evaluation boards.

ORDERING INFORMATION

CDB3318 Evaluation Board

CS3318

8-Channel

Digitally Controlled

Analog Volume Control

8-Channel

Passive

Inputs

AC/DC

Coupling

AC/DC

Coupling

8-Channel

Passive

Outputs

USB/RS232

PC Interface

PC or External

Serial Control Input

External

Serial Control Output

CDB3318

MAY '06

DS693DB2

1 2 3 4 5 6 ... 15 16

Inhaltsverzeichnis

Seite 1 - Evaluation Board for CS3318

Seite 2 - TABLE OF CONTENTS

10 DS693DB2CDB33186. CDB SCHEMATICSFigure 8. CS3318Schematic Page 1

Seite 3 - 1. SYSTEM OVERVIEW

DS693DB2 11CDB3318Figure 9. Analog Inputs and OutputsSchematic Page 2

Seite 4 - 1.7 PC Interfaces

12 DS693DB2CDB3318Figure 10. Serial Control / PowerSchematic Page 3

Seite 5 - 2. PC SOFTWARE CONTROL

DS693DB2 13CDB33187. CDB LAYOUTFigure 11. Silkscreen Top

Seite 6 - 2.2 Register Maps Tab

14 DS693DB2CDB3318Figure 12. Top Side Copper Layer

Seite 7 - 3. PERFORMANCE PLOTS

DS693DB2 15CDB3318Figure 13. Bottom Side Copper Layer

Seite 8

16 DS693DB2CDB33188. REVISION HISTORYRelease ChangesDB1 Initial ReleaseDB2 Updated performance plots shown in Figures 3 - 6 on page 7.Contacting Cirru

Seite 9 - 5. CDB BLOCK DIAGRAM

2 DS693DB2CDB3318TABLE OF CONTENTS1. SYSTEM OVERVIEW ...

Seite 10 - 6. CDB SCHEMATICS

DS693DB2 3CDB33181. SYSTEM OVERVIEWThe CDB4265 evaluation board is an excellent means for evaluating the CS3318 digitally controlled analog volumecont

Seite 11 - DS693DB2 11

4 DS693DB2CDB3318The 10-pin, 2 column header, J88, provides unidirectional output access to the CS3318’s SPI MOSI andCCLK signals, as well as its AD0,

Seite 12 - 12 DS693DB2

DS693DB2 5CDB33182. PC SOFTWARE CONTROLThe CDB3318 is designed for use with the Microsoft Windows based FlexGUI graphical user interface. This inter-f

Seite 13 - 7. CDB LAYOUT

6 DS693DB2CDB33182.2 Register Maps TabThe Register Maps tab provides an easy register-level interface to the on-board devices. Register valuescan be m

Seite 14 - 14 DS693DB2

DS693DB2 7CDB33183. PERFORMANCE PLOTS(TA= +25 ºC, VA+ = +9 V, VA- = -9 V, VD = +3.3 V, RL=100kΩ, CL=20pF, VIN=2VRMS, FIN=1kHz,Gain = 0 dB, Measurement

Seite 15 - DS693DB2 15

8 DS693DB2CDB33184. SYSTEM CONNECTIONS & JUMPERSConnector NameReference DesignatorSignal Direction Connector FunctionGND J5 Input Ground reference

Seite 16 - 8. REVISION HISTORY

DS693DB2 9CDB33185. CDB BLOCK DIAGRAMFigure 7. Block DiagramCS33188-ChannelDigitally ControlledAnalog Volume Control8-ChannelPassiveInputsAC/DC Coupl