CRD4202-1

2

DS549RD1A1

TABLE OF CONTENTS

1. GENERAL INFORMATION ...................................................................................3

2. SCHEMATIC DESCRIPTION ................................................................................3

2.1 CS4202 Audio Codec .................................................................................3

2.2 Analog Inputs ..............................................................................................3

2.3 Rear Channel and Surround Outputs .........................................................4

2.4 Front Channel and Headphone Outputs .....................................................4

2.5 S/PDIF Optical Output ................................................................................4

2.6 CNR Connector and EEPROM ...................................................................4

2.7 Auto Demotion Circuit .................................................................................4

2.8 Phase Locked Loop (Optional) ...................................................................4

2.9 Component Selection .................................................................................4

2.10 EMI Components ......................................................................................5

3. GROUNDING AND LAYOUT ................................................................................5

3.1 Partitioned Voltage and Ground Planes .....................................................5

3.2 AC-Link .......................................................................................................5

3.3 CS4202 Layout Notes .................................................................................5

4. REFERENCES .......................................................................................................6

4.1 ADDENDUM ...............................................................................................6

5. BILL OF MATERIALS .........................................................................................21

LIST OF FIGURES

Figure 1. Block Diagram ....................................................................................................7

Figure 2. CS4202 Audio Codec .........................................................................................8

Figure 3. Analog Inputs ......................................................................................................9

Figure 4. Center Channel, Surround, and Sub-Woofer Outputs ......................................10

Figure 5. Front Channel and Headphone Sense Output .................................................11

Figure 6. S/PDIF Optical Output ......................................................................................12

Figure 7. CNR Connector ................................................................................................13

Figure 8. Phase Locked Loop ..........................................................................................14

Figure 9. Auto Demotion and Serial Buffers ....................................................................15

Figure 10. PCB Layout: Top Assembly Drawing ..............................................................16

Figure 11. PCB Layout: Top Layer ..................................................................................17

Figure 12. PCB Layout: Bottom Layer .............................................................................18

Figure 13. PCB Layout: Drill Drawing ..............................................................................19

Figure 14. PCB Layout: Top Silkscreen ...........................................................................20

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