Development Kit User Guide
Rev 2.0 Apr.20
8
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Antenna Connection
The RF SMA connector is used to connect an external antenna for the XS1110
module.
Figure 3
-
2: RF SMA Connector
SYSTEM0
The SYSTEM0 header is used to set whether transmissions are done via UART
or I2C.
Figure 3
-
3: SYSTEM0 Header
To set transmission selection to UART, disconnect jumper on SYSTEM0 for
SYSTEM0 pins to pull high (default).
Table 3
-
2: Antenna Connector Details
Component
PCB Label
Description
RF SMA Connector
SMA1
External antenna connector for the XS1110
module
Table 3
-
3: SYSTEM0 Details
Component
PCB Label
Description
2-pin header
P20
•
Transmission selection (UART or I2C)
•
SYSTEM0 : 0=I2C ; 1=UART
