Cirrus-logic CDB4265 Bedienungsanleitung

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Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
Cirrus Logic, Inc.
www.cirrus.com
CDB4265
Evaluation Board for CS4265
Features
z Single-ended Analog Inputs
z Single-ended Analog Outputs
z Coaxial and Optical Connections for CS4265
S/PDIF Transmitter Output
z CS8416 S/PDIF Digital Audio Receiver
z Header for Optional External Software
Configuration of CS4265
z Header for External PCM Serial Audio I/O
z 3.3 V Logic Interface
z Pre-defined Software Scripts
z Demonstrates Recommended Layout and
Grounding Arrangements
z Windows
®
Compatible Software Interface
to Configure CS4265 and Inter-board
Connections
ORDERING INFORMATION
CDB4265 Evaluation Board
Description
The CDB4265 evaluation board is an excellent means
for evaluating the CS4265 CODEC. Evaluation requires
an analog/digital signal source and analyzer, and power
supplies. A Windows
®
PC compatible computer must be
used to evaluate the CS4265.
System timing for the I²S, Left-Justified and Right-Justi-
fied interface formats can be provided by the CS4265,
the CS8416, or by a PCM I/O stake header with an ex-
ternal source connected.
RCA phono jacks are provided for the CS4265 analog in-
puts and outputs. Digital data I/O is available via RCA
phono or optical connectors to the CS8416 and CS4265.
The Windows
®
software provides a GUI to make config-
uration of the CDB4265 easy. The software
communicates through the PC’s serial port to configure
the control port registers so that all features of the
CS4265 can be evaluated. The evaluation board may
also be configured to accept external timing and data
signals for operation in a user application during system
development.
I
CS4265
Passive Input Filter
Active Input Filter
Header
Microphone Input
S/PDIF Output Circuits
Canned
Oscillator
Control Port Interface
Test Points
M
U
X
Master Clock
Passive Output Filter
Active Output Filter
CS8416
FPGA
Sub-clocks and Data
FEB ‘05
DS657DB1
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Inhaltsverzeichnis

Seite 1 - Evaluation Board for CS4265

Copyright © Cirrus Logic, Inc. 2005(All Rights Reserved)Cirrus Logic, Inc.www.cirrus.comCDB4265Evaluation Board for CS4265Featuresz Single-ended Analo

Seite 2 - TABLE OF CONTENTS

CDB426510 DS657DB13.4.2 SPDIF Recovered Clock - SPDIF In to DAC - ADC to SPDIF OutUsing the pre-configured script file named “SPDIF Recovered Clock -

Seite 3 - LIST OF TABLES

CDB4265DS657DB1 114. FPGA REGISTER QUICK REFERENCEThis table shows the register names and their associated default values.Addr Function 7 6 5432 1 001

Seite 4 - 1. SYSTEM OVERVIEW

CDB426512 DS657DB15. FPGA REGISTER DESCRIPTION5.1 CODE REVISION ID - REGISTER 01HFunction:Identifies the revision of the FPGA code. This register is R

Seite 5 - 1.11 USB Control Port

CDB4265DS657DB1 135.3 SUBCLOCK SOURCE CONTROL - ADDRESS 03H5.3.1 SUBCLOCK SOURCE (BITS 1:0)Default = 01Function:This bit selects the source of the CS4

Seite 6 - 2.2.2 CS4265 TXSDIN Source

CDB426514 DS657DB15.4 CS4265 SDIN SOURCE CONTROL - ADDRESS 04H5.4.1 SDIN2 SOURCE (BITS 6:4)Default = 00Function:These bits select the source of the CS

Seite 7 - 3.1 CDB4265 Controls Tab

CDB4265DS657DB1 155.5 TRANSMITTER SDIN SOURCE CONTROL - ADDRESS 05H5.5.1 TXSDIN SOURCE (BITS 2:0)Default = 01Function:These bits select the source of

Seite 8 - 3.2 S/PDIF Rx Controls Tab

CDB426516 DS657DB16. CDB CONNECTORS, JUMPERS, AND SWITCHES CONNECTORReference Designator INPUT/OUTPUT SIGNAL PRESENT+5V J4 Input+5.0 V Power Supp

Seite 9 - 3.3 Register Maps Tab

CDB4265DS657DB1 17 JUMPER PURPOSE POSITION FUNCTION SELECTEDJ6 Selects the source of voltage for the VLS supply.+1.8 V+2.5 V+3.3 V+5 V*Voltage source

Seite 10

CDB426518 DS657DB17. CDB BLOCK DIAGRAM CS4265Passive Input FilterActive Input FilterHeaderMicrophone InputS/PDIF Output CircuitsCannedOscill

Seite 11 - Addr Function 7 6 5432 1 0

CDB4265DS657DB1 198. CDB SCHEMATICS Figure 5. CS4265

Seite 12 - 5. FPGA REGISTER DESCRIPTION

CDB42652 DS657DB1TABLE OF CONTENTS1. SYSTEM OVERVIEW ...

Seite 13

CDB426520 DS657DB1 Figure 6. Analog Inputs

Seite 14

CDB4265DS657DB1 21 Figure 7. Analog Outputs

Seite 15

CDB426522 DS657DB1 Figure 8. S/PDIF I/O

Seite 16

CDB4265DS657DB1 23 Figure 9. Control Port

Seite 17

CDB426524 DS657DB1 Figure 10. FPGA

Seite 18 - 18 DS657DB1

CDB4265DS657DB1 25 Figure 11. Discrete Clock Routing and Level Shifting

Seite 19 - 8. CDB SCHEMATICS

CDB426526 DS657DB1 Figure 12. Power

Seite 20 - 20 DS657DB1

CDB4265DS657DB1 279. CDB LAYOUT Figure 13. Silk Screen

Seite 21 - DS657DB1 21

CDB426528 DS657DB1 Figure 14. Topside Layer

Seite 22 - 22 DS657DB1

CDB4265DS657DB1 29 Figure 15. Bottom side Layer

Seite 23 - DS657DB1 23

CDB4265DS657DB1 3LIST OF FIGURESFigure 1. CDB4265 Controls Tab...

Seite 24 - 24 DS657DB1

CDB426530 DS657DB110.REVISION HISTORY Revision Date ChangesDB1 February 2005 Initial ReleaseTable 8. Revision HistoryContacting Cirrus Logic SupportFo

Seite 25 - DS657DB1 25

CDB42654 DS657DB11. SYSTEM OVERVIEW The CDB4265 evaluation board is an excellent means for evaluating the CS4265 CODEC. Analog and digital audiosignal

Seite 26 - 26 DS657DB1

CDB4265DS657DB1 51.7 External Control HeadersThe evaluation board has been designed to allow interfacing with external systems via the headers J15, an

Seite 27 - 9. CDB LAYOUT

CDB42656 DS657DB12. SYSTEM CLOCKS AND DATAThe CDB4265 implements comprehensive clock and data routing capabilities. Configuration of the clock and dat

Seite 28 - 28 DS657DB1

CDB4265DS657DB1 73. PC SOFTWARE CONTROLThe CDB4265 is shipped with a Microsoft Windows® based graphical user interface which allows control over theCS

Seite 29 - DS657DB1 29

CDB42658 DS657DB13.2 S/PDIF Rx Controls TabWhen the CDB4265 is configured to make use of the CS8416 S/PDIF receiver, these devices must be con-figured

Seite 30 - 10.REVISION HISTORY

CDB4265DS657DB1 93.3 Register Maps TabThe Register Maps tab provides low level control over the register level settings of the CS4265, CS8416,and FPGA

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