User's Manual

SIM548C EVB User Guide
SIM548C-EVB_ UGD _V1.01 04.05.2008
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4.3 GPS control & I/O
Figure 16: GPS control & I/O interface
Pin Signal I/O Description
1 GPS_WAKEUP I GPS WAKEUP key
2 NC
3 GPS_BOOTSEL I For re-programming the Flash, it must be set to High
4 NC
5 GPS_MRST I Reset pin of the GPS part, active low.
6 NC
7 GPS_TIMEMARK O
1 PPS timemark output for synchronizing to within
1 microsecond of GPS time.
8 NC
9 NC
10 NC
11 GND GND
12 NC
13 GND GND
14 GPS_VCC I GPS part power supply