sparkfun ZED-F9P Hook-Up Manual page 11

USB
As stated earlier, there are two USB ports: one for u-center and another for processor. The USB C connector
labeled as u-center makes it easy to connect the ZED-F9P to u-center for configuration and quick viewing of
NMEA sentences. It is also possible to connect a Raspberry Pi or other single board computer over USB. The
ZED-F9P enumerates as a serial COM port and it is a separate serial port from the UART interface. See Getting
Started with U-Center for more information about getting the USB port to be a serial COM port. The USB
connector labeled as processor is available to program your MicroMod Processor Board. Make sure to check
your respective Processor Board to install the USB-to-serial drivers.
A 3.3V regulator is provided to regulate the 5V USB down to 3.3V the module requires. External 5V can be applied
or a direct feed of 3.3V can be provided. Note that if you're provide the board with 3.3V directly it should be a clean
supply with minimal noise (less than 50mV VPP ripple is ideal for precision locating).
The 3.3V regulator is capable of sourcing 600mA from a 5V input and the USB C connection is capable of
sourcing 2A.
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I C (a.k.a DDC)
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The u-blox ZED-F9P has a "DDC" port which is really just an I C port (without all the fuss of trademark issues).
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These pins are shared with the SPI pins. By default, the I C pins are enabled. Be sure the SPI jumper on the rear
of the board is open. The MicroMod GNSS Carrier Board also includes one Qwiic connector to make daisy
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chaining this GPS receiver with a large variety of I C devices. Checkout Qwiic for your next project.