Ublox XPLR-AOA, User Manual

Page: 15 / 28

UBX-21004616 - R02 Contents Page 15 of 28
C1 - Public
The main components of any C209 tag are shown in Figure 12.
Figure 12: C209 main functional components
The important pin definitions on the C209 application board are described in Table 3.
No. Name I/O Description Remarks
GPIO_1 RED O RED system status signal Active low
GPIO_2 LIS_INT I Interrupt signal from Ambient Light
Sensor
GPIO_7 GREEN O GREEN system status signal Active low
GPIO_8 BLUE O BLUE system status signal Active low
GPIO_18 SWITCH_2 I Switch_2 button Active low
GPIO_20 UART_RTS O UART request to send control signal Used only when hardware flow control is enabled
GPIO_21 UART_CTS I UART clear to send control signal Used only when hardware flow control is enabled
GPIO_22 UART_TXD O UART data output
GPIO_23 UART_RXD I UART data input
GPIO_42 LIS_INT I Interrupt signal from accelerometer
Table 3 Important pin definitions on the C209
For more information about programming the module, see also the NINA-B4 system integration
manual [6] and NINA-B40 data sheet [13]. See also
C209 schematics .
☞
Although the sensors on the C209 application board are not used in the latest direction-finding
tag software from u-blox, the sensors can be utilized in any customer application.