ZED-F9K-Integration manual
Figure 10: ZED-F9K output isolation
Figure 11: ZED-F9K input isolation
3.4.1 UART
A Universal Asynchronous Receiver/Transmitter (UART) port consists of an RX and a TX line. Neither
handshaking signals nor hardware flow control signals are available. The UART interface protocol
and baud rate can be configured but there is no support for setting different baud rates for reception
and transmission.
The ZED-F9K includes two UART serial ports. UART1 can be used as a host interface for
configuration, monitoring and control. UART2 is available as an optional stand-alone RTCM
interface and cannot be used as a host interface.
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
9600 8 none 1
19200 8 none 1
38400 8 none 1
57600 8 none 1
115200 8 none 1
UBX-20046189 - R01
3 Receiver functionality Page 35 of 105
C1-Public Early production information
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