
REF: BB_SRM_xM BeagleBoard-xM System
Reference Manual
Revision A2
Page 9 of 164
11.1 BEAGLEBOARD DIMENSIONS ....................................................................................................140
11.2 BEAGLEBOARD EXPANSION CARD DESIGN INFORMATION .......................................................141
11.2.1 Mounting Method ...........................................................................................................141
11.2.2 Expansion EEPROM ......................................................................................................143
12.0 BOARD VERIFICATION TEST POINTS ..............................................................................144
12.1.1 Signal Access Points.......................................................................................................146
12.2 TROUBLESHOOTING GUIDE .......................................................................................................147
13.0 KNOWN ISSUES........................................................................................................................148
14.0 PCB COMPONENT LOCATIONS ..........................................................................................149
15.0 SCHEMATICS............................................................................................................................151
16.0 BILLS OF MATERIAL .............................................................................................................163
17.0 PCB INFORMATION................................................................................................................164
Figures
Figure 1. BeagleBoards C4 and -xM............................................................................ 18
Figure 2. USB Y-Cable ................................................................................................ 21
Figure 3. The -xM Rev A Box ..................................................................................... 28
Figure 4. -xM Rev A Box Contents ............................................................................. 29
Figure 5. USB OTG Connection .................................................................................. 30
Figure 6. USB Host Connection................................................................................... 31
Figure 7. DC Power Connection .................................................................................. 32
Figure 8. BeagleBoard JTAG Connection ................................................................... 33
Figure 9. BeagleBoard Serial Cable Connection.......................................................... 34
Figure 10. BeagleBoard S-Video Connection............................................................ 35
Figure 11. BeagleBoard DVI-D Connection.............................................................. 36
Figure 12. BeagleBoard Audio Out Cable Connection.............................................. 37
Figure 13. BeagleBoard Audio In Cable Connection................................................. 38
Figure 14. BeagleBoard Indicator Locations ............................................................. 39
Figure 15. BeagleBoard Button Location................................................................... 40
Figure 16. BeagleBoard microSD Card Location ...................................................... 41
Figure 17. BeagleBoard LCD Header Location......................................................... 42
Figure 18. BeagleBoard-xM High Level Block Diagram .......................................... 43
Figure 19. BeagleBoard Major Components.............................................................. 44
Figure 20. Overvoltage Protection ............................................................................. 45
Figure 21. Input Power Section.................................................................................. 47
Figure 22. AUX 3.3 Power Section............................................................................ 50
Figure 23. Processor Current Measurement ............................................................... 51
Figure 24. VBAT Power Conditioning ...................................................................... 52
Figure 25. Main Power Rails...................................................................................... 55
Figure 26. Peripheral Voltages................................................................................... 58
Figure 27. Power Sequencing..................................................................................... 61
Figure 28. Reset Circuitry .......................................................................................... 62
Figure 29. AM37x Block Diagram............................................................................. 64
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