NEO-F10N - Integration manual
3 Receiver functionality
This chapter provides a description of the receiver's functionality.
3.1 Communication interfaces and PIOs
NEO-F10N supports communication over UART for communication with a host system. UBX and
NMEA protocols can be enabled simultaneously with individual interface settings, e.g., for baud rate,
message rates, and so on.
3.1.1 UART
NEO-F10N supports a Universal Asynchronous Receiver/Transmitter (UART) port consisting of an
RX and a TX line. The UART can be used as a host interface which supports a configurable baud rate
and protocol selection.
Neither handshaking signals nor hardware flow control signals are supported.
The UART baud rate can be configured for selected speeds. Different rates than these speeds are
not supported for transmission and reception.
The UART RX interface will be disabled when more than 100 frame errors are detected during
a one-second period. This can happen if the wrong baud rate is used or the UART RX pin is
grounded. An error message appears when the UART RX interface is re-enabled at the end of
the one-second period.
Baud rate
Data bits
Parity
Stop bits
4800
8
none
1
9600
8
none
1
19200
8
none
1
38400
8
none
1
57600
8
none
1
115200
8
none
1
230400
8
none
1
460800
8
none
1
921600
8
none
1
Table 10: Possible UART interface configurations
Allow a short time delay of typically 100 ms between sending a baud rate change message and
providing input data at the new rate. Otherwise some input characters may be ignored or the port
could be disabled until the interface is able to process the new baud rate.
The default baud rate is 38400 baud. Using a lower baud rate may cause buffering problems.
If there is too much data for the interface's bandwidth, the output buffer will fill up. Once the buffer
space is exceeded, new messages to be sent will be dropped. To prevent message loss, the baud rate
and the number of enabled messages should be selected carefully.
3.1.2 PIOs
This section describes the PIOs supported by NEO-F10N. All PIO active voltage levels are related to
the VCC supply voltage. All the inputs have internal pull-up resistors in normal operation and can
be left open if unused.
UBXDOC-963802114-12193 - R02
3 Receiver functionality
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