Cirrus-logic CDB4272 Manual do Utilizador

1Copyright Cirrus Logic, Inc. 2003(All Rights Reserved)Cirrus Logic, Inc.www.cirrus.comCDB4272Evaluation Board For CS4272FeaturesDifferential Analog

CDB427210JUMPER / SWITCH PURPOSE POSITION FUNCTION SELECTEDM/S[1:0](S1)Subclock Master/Slave Select *00011011CS4272 is MasterCS8416 is MasterCS8406 is

CDB4272112. 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

CDB4272122.2.1Verifying Board Operation:1) If connected, disconnect the PC parallel cable.2) Set all positions on S1 to LO, with the exception of M0 w

CDB4272133. CDB427X.EXE USER'S GUIDE3.1 Main WindowThe main window of the CDB4272 Graphical User Interface allows the user to view andchange the

CDB4272143.2 Advanced WindowClicking the “Advanced...” button on the main window will launch a graphical register map ofthe CS4272. Changes made to th

CDB4272154. BLOCK DIAGRAMCS8416 CS8406OMCKMCLKLRCKSCLKISCLKILRCKRMCKOSCLKOLRCKMCLK I/OLRCK I/OSCLK I/OSDIN InSDOUT OutRMCKDisableSubclock DirMCLK DirC

CDB4272165. SCHEMATICS AND LAYOUT Figure 6. Hierarchy, Schematic Sheet 1

CDB427217Figure 7. CS4272, Schematic Sheet 2

CDB427218Figure 8. Analog Input, Schematic Sheet 3

CDB427219Figure 9. Analog Output, Schematic Sheet 4

CDB42722TABLE OF CONTENTS1. SYSTEM OVERVIEW ...

CDB427220Figure 10. CS8416 S/PDIF Receiver, Schematic Sheet 5

CDB427221Figure 11. CS8406 S/PDIF Transmitter, Schematic Sheet 6

CDB427222Figure 12. Board Setup, Schematic Sheet 7

CDB427223Figure 13. PCM Header, Schematic Sheet 8

CDB427224Figure 14. Control Port, Schematic Sheet 9

CDB427225Figure 15. Power, Schematic Sheet 10

CDB427226Figure 16. Component Placement and Reference Designators

CDB427227Figure 17. Top Layer

CDB427228Figure 18. Bottom Layer

CDB4272296. APPENDIXComplete Analog Input Buffer Schematic Figure 19. Complete Analog Input Buffer Schematic

CDB42723LIST OF FIGURESFigure 1. Instrumentation Amplifier Configuration... 6F

CDB427241. SYSTEM OVERVIEW The CDB4272 demonstration board is an excellent means for evaluating the CS4272 stereoCODEC. Analog and digital audio signa

CDB427251.4 Canned OscillatorOscillator Y1 provides a System Clock (OMCK) to the CS8416. This clock can be routedthrough the CS8416 and out the RMCK p

CDB42726The 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

CDB42727dielectric absorption properties. The HPF formed by this R-C pair must be such that the volt-age across the aluminum electrolytic DC-block cap

CDB427281.9 External Control HeadersThe evaluation board has been designed to allow interfacing with external systems via theheaders J26, J32, J17, an

CDB42729CONNECTOR 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