SiRFatlasV
Hardware Design Guide
January, 2010
SiRF Design Guide
– Proprietary and Confidential
17
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Insert a switch on the signal path between the powered external module and the SoC I/O
pads. Use the SoC
’s I/O to control the switch or control the external module’s power supply to
make sure that when system goes into deep-sleep or hibernation mode, the external module
is powered off at same time