Cirrus Logic CRD42L51 - Manual (Page 2)

2 DS679RD1
CRD42L51
TABLE OF CONTENTS
1. QUICK-START GUIDE ........................................................................................................................... 3
2. FUNCTION & LEVEL DETAILS ............................................................................................................ 4
3. SYSTEM OVERVIEW ............................................................................................................................. 5
3.1 Power (U2) ..................................................................................................................................... 5
3.2 Microcontroller (U5) ........................................................................................................................ 5
3.3 CS42L51 Audio CODEC (U1) ........................................................................................................ 5
3.4 CS8416 Digital Audio Receiver (U4) .............................................................................................. 5
3.5 Oscillator (Y1) ................................................................................................................................. 5
3.6 Analog Input ................................................................................................................................... 5
3.7 Analog Outputs ............................................................................................................................... 5
3.8 Switch & Pushbutton ...................................................................................................................... 6
3.9 LEDs ............................................................................................................................................... 6
3.10 Error Indicators ............................................................................................................................. 6
3.11 Layout ........................................................................................................................................... 6
4. SYSTEM CONNECTIONS & INTERFACE ............................................................................................. 7
5. CRD42L51 SCHEMATICS ..................................................................................................................... 9
6. CRD42L51 LAYOUT ........................................................................................................................... 13
7. REVISION HISTORY ............................................................................................................................ 19
LIST OF FIGURES
Figure 1. Block Diagram............................................................................................................................... 8
Figure 2. CS42L51 and Analog I/O (Schematic Sheet 1) ............................................................................ 9
Figure 3. S/PDIF Input (Schematic Sheet 2).............................................................................................. 10
Figure 4. Microcontroller, Pushbuttons and LED Indicators (Schematic Sheet 3) ..................................... 11
Figure 5. DC-DC Converter and AAA Battery Clip (Schematic Sheet 4) ................................................... 12
Figure 6. Silk Screen Top........................................................................................................................... 13
Figure 7. Silk Screen Bottom ..................................................................................................................... 14
Figure 8. Top-Side Layer ........................................................................................................................... 15
Figure 9. Internal Layer (Ground Plane) .................................................................................................... 16
Figure 10. Internal Layer (Power Plane) .................................................................................................... 17
Figure 11. Bottom-Side Layer .................................................................................................................... 18