Cirrus Logic CRD4299-1 AVR User Manual
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CRD4299-1 AMR
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DS319RD1A1
TABLE OF CONTENTS
1. GENERAL INFORMATION ............................................................................ 4
2. REFERENCE DESIGN FEATURES ............................................................... 4
2.1 Digital Audio Out .................................................................................. 4
2.2 CS4299 Audio Codec ‘97 .................................................................... 4
2.2.1 Power Requirements .................................................................. 5
2.3 Analog I/O ............................................................................................ 5
2.4 Audio I/O .............................................................................................. 5
2.4.1 Line Out ...................................................................................... 5
2.4.2 Headphone Out .......................................................................... 5
2.4.3 Line In ........................................................................................ 5
2.4.4 Mic In .......................................................................................... 5
2.4.5 CD Audio In ................................................................................ 6
2.4.6 Aux In ......................................................................................... 6
2.4.7 Video In ...................................................................................... 6
2.4.8 Modem Audio Connection .......................................................... 6
3. SCHEMATIC DESCRIPTION ......................................................................... 7
3.1 Figure 11: Block Diagram .................................................................... 7
3.2 Figure 12: AMR Bus Interface ............................................................. 7
3.3 Figure 13: Power Supply ..................................................................... 7
3.4 Figure 14: CS4299 AC ‘97 Audio Codec ............................................. 7
3.5 Figure 15: Analog Inputs ...................................................................... 7
3.6 Figure 16: Audio Outputs ..................................................................... 8
3.7 Figure 17: Microphone Pre-amp and Bias ........................................... 8
3.8 Component Selection .......................................................................... 8
3.9 EMC Components ............................................................................... 8
4. GROUNDING AND LAYOUT ......................................................................... 9
4.1 Partitioned Voltage and Ground Planes .............................................. 9
4.2 CS4299 Layout Notes .......................................................................... 9
5. AUDIO PERFORMANCE EVALUATION ..................................................... 10
5.1 Plots ................................................................................................... 10
6. REFERENCES .............................................................................................. 17
7. ADDENDUM ................................................................................................. 17
8. BILL OF MATERIALS .................................................................................. 25
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/
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Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of
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