BeagleBoard XM C2, Справочное руководство

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REF: BB_SRM_xM
BeagleBoard-xM System
Reference Manual
Revision C2
Page 63 of 163
7.9.3 Power Sequencing
Based on the boot configuration pins, the
TPS65950 knows the type of OMAP processor
that it needs to support, in this case the processor. The voltages are ramped in a sequence
that is compatible with the processor.
Figure 27 is the sequence in which the power rails,
clocks, and reset signal come up.
Figure 27. Power Sequencing
7.9.4 Reset Signals
The BeagleBoard uses three distinct reset circuits:
o
Warm Reset
o
Cold Reset
o
User Reset
Figure 28 shows the connections for the Reset interfaces.