Cirrus-logic CDB4271 Manual de usuario

1Copyright Cirrus Logic, Inc. 2003(All Rights Reserved)Cirrus Logic, Inc.www.cirrus.comCDB4271Evaluation Board For CS4271FeaturesSingle-ended inputs

CDB427110JUMPER / SWITCH PURPOSE POSITION FUNCTION SELECTEDM/S[1:0](S1)Subclock Master/Slave Select *00011011CS4271 is MasterCS8416 is MasterCS8406 is

CDB4271112. INITIAL BOARD SETUP2.1 Power Supplies:1) Verify that all power supplies are off before making connections.2) Connect a +5.0 VDC power supp

CDB4271122.2.1Verifying Board Operation:1) If connected, disconnect the PC parallel cable.2) Set all positions on S1 to LO, with the exception of M0 w

CDB4271133. CDB427X.EXE USER'S GUIDE3.1 Main WindowThe main window of the CDB4271 Graphical User Interface allows the user to view andchange the

CDB4271143.2 Advanced WindowClicking the “Advanced...” button on the main window will launch a graphical register map ofthe CS4271. Changes made to th

CDB4271154. BLOCK DIAGRAMCS8416 CS8406OMCKMCLKLRCKSCLKISCLKILRCKRMCKOSCLKOLRCKMCLK I/OLRCK I/OSCLK I/OSDIN InSDOUT OutRMCKDisableSubclock DirMCLK DirC

CDB4271165. SCHEMATICS AND LAYOUT Figure 6. Hierarchy, Schematic Sheet 1

CDB427117Figure 7. CS4271 Schematic Sheet 2

CDB427118Figure 8. Analog Input, Schematic Sheet 3

CDB427119Figure 9. Analog Output, Schematic Sheet 4

CDB42712TABLE OF CONTENTS1. SYSTEM OVERVIEW ...

CDB427120Figure 10. CS8416 S/PDIF Receiver, Schematic Sheet 5

CDB427121Figure 11. CS8406 S/PDIF Transmitter, Schematic Sheet 6

CDB427122Figure 12. Board Setup, Schematic Sheet 7

CDB427123Figure 13. PCM Header, Schematic Sheet 8

CDB427124Figure 14. Control Port, Schematic Sheet 9

CDB427125Figure 15. Power, Schematic Sheet 10

CDB427126Figure 16. Component Placement and Reference Designators

CDB427127Figure 17. Top Layer

CDB427128Figure 18. Bottom Layer

CDB42713LIST OF FIGURESFigure 1. Instrumentation Amplifier Configuration... 6F

CDB427141. SYSTEM OVERVIEW The CDB4271 demonstration board is an excellent means for evaluating the CS4271 stereoCODEC. Analog and digital audio signa

CDB427151.4 Canned OscillatorOscillator Y1 provides a System Clock (OMCK) to the CS8416. This clock can be routedthrough the CS8416 and out the RMCK p

CDB42716The resistor designated by R2 (see Figure 1) can be adjusted to change the gain of the in-strumentation amp. The feedback resistors ‘R’ on the

CDB42717dielectric absorption properties. The HPF formed by this R-C pair must be such that the volt-age across the aluminum electrolytic DC-block cap

CDB427181.9 External Control HeadersThe evaluation board has been designed to allow interfacing with external systems via theheaders J26, J32, J17, an

CDB42719CONNECTOR INPUT/OUTPUT SIGNAL PRESENT+5V - J1 Input +5.0 V Power Supply-18V - J7 Input -18.0 V to -5.0 V Power Supply for the op-amps+18V - J6