u-blox EVK-NINA-B3 Series, User Manual

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EVK-NINA-B3 - User Guide
UBX-17056481 - R03 Product description Page 19 of 31
Figure 14: Jumper headers J19 and J9 that are used to isolate specific NINA signals
Connector
annotation Pin
number Schematic
net name Description
J19 1 RESET_N Reset signal, active low
2 RESET_N_I Connects to the Interface MCU’s reset line
3 SWDIO SWD data signal
4 SWDIO_I Interface MCU SWD data signal, used to program/debug the NINA module
5 SWDCLK SWD clock signal
6 SWDCLK_I Interface MCU SWD data signal, used to program/debug the NINA module
7 GPIO_8
NINA-B30: GPIO or TRACE
NINA-B31: BLUE signal
8 BLUE RGB diode blue signal, active low
9 GPIO_7/
SWITCH_1 NINA-B30: GPIO, can be used as either user LED output or push-button input
NINA-B31: SWITCH_1 and GREEN signal
10 GREEN RGB diode green signal, active low
11 GPIO_1 NINA-B30: GPIO, can be used as user LED output
NINA-B31: RED signal
12 RED RGB diode red signal, active low
J9 1 GPIO_16/
UART_DTR NINA-B30: analog capable GPIO signal
NINA-B31: UART DTR output
2 UART_DTR_I UART to USB DTR signal
3 GPIO_17/
UART_DSR NINA-B30: analog capable GPIO signal
NINA-B31: UART DSR input
4 UART_DSR_I UART to USB DSR signal
5 GPIO_20/
UART_RTS NINA-B30: analog capable GPIO signal
NINA-B31: UART RTS output
6 UART_RTS_I UART to USB RTS signal
7
GPIO_21/
UART_CTS NINA-B30: GPIO signal
NINA-B31: UART CTS input
8 UART_CTS_I UART to USB CTS signal
9 GPIO_22/
UART_TXD NINA-B30: GPIO signal
NINA-B31: UART TXD output
10 UART_TXD_I UART to USB TXD signal
11 GPIO_23/
UART_RXD NINA-B30: analog capable GPIO signal
NINA-B31: UART RXD input
12 UART_RXD_I UART to USB RXD signal
Table 13: Pinout of jumper headers - J19 and J9