USGlobalsat EB-5631RE - Manual (Page 8)

2012/7/30 - 8 -
NOTE:
1. RESET: Low Active, when EB-5631RE is accepted this single, EB-5631RE going to Hibernate
mode. If want EB-5631RE up, need input ON_OFF single.
2. TIMEMARK: One pulse per second output. When EB-5631RE is 3D Fixed, this pin will output
1uS Hi level pulse. If don
’t use this, just NC.
3. ECLK: ECLK clock input for frequency aiding applications or as a test clock. If don ’t use this,
just NC.
4. GPIO: User can use this I/O pin for special functions. For example, control LED, and can be
used External Interrupts. If don
’t use this, just NC.
5. WAKE_UP: EB-5631RE power on, WAKE_UP will output 1.8V.
6. ON_OFF: This pin is controlled EB-5631RE power on. If EB-5631RE want to EB-365 pin to pin
compactable, please ON_OFF connect to WAKE_UP. If don
’t use this, just NC.
7. DR I2C interface: The I2C interface supports required sensor instruments such as gyros,
accelerometers, compasses or other sensors that can operate with an I2C bus. If don ’t use
this, just NC.
8. VBAT: This is the battery backup power input for the SRAM and RTC when main power is
removed. VBAT is 2V ~ 3.5V.
9. EB-5631RE RF is has 3.3V external POWER to active ANTENNA use.