SiRFatlasV
Hardware Design Guide
January, 2010
SiRF Design Guide
– Proprietary and Confidential
iii
List of Tables
Table 1: Mode Configuration Pins................................................................................................. 5
Table 2: Power Pins ................................................................................................................... 6
Table 3: On-Chip PMU Specifications and Applications.................................................................... 7
Table 4: Reset Behavior.............................................................................................................13
Table 5: Reset Behavior when Working as a Reset Button ..............................................................14
List of Figures
Figure 1: SiRFatlasV System Block Diagram .................................................................................. 3
Figure 2: USB DP/DN Route........................................................................................................ 8
Figure 3: USB Layout Rule .......................................................................................................... 9
Figure 4: ADC Power Supply and Reference Decoupling ................................................................10
Figure 5: SD0 Power Circuit .......................................................................................................11
Figure 6: 24MHz Crystal Circuit...................................................................................................11
Figure 7: 32.768KHz Crystal Circuit .............................................................................................12
Figure 8: P-MOS and N-MOS in I/O Pad.......................................................................................14
Figure 9: Random RTC Reset or On Key 15s Issue........................................................................15
Figure 10: Workaround for Random RTC Reset or On Key 15s Issue ...............................................16