JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2
Page 14 of 28
DEC 2021
5.11
J14 - UART connector
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
5V
2
UART0_TXD
99
OUT (3.3V)
3
UART0_RXD
101
IN (3.3V)
4
UART2_TXD
236
OUT, Debug port (3.3V)
5
UART2_RXD
238
IN, Debug port (3.3V)
6
GND
Unidirectional directional 1.8V to 3.3V level shifters and 10 Ohm series resistance (plus ESD
protection).
5.12
J32 – CAM LED
Pin
Description
Socket pin
Note
1
12V
2
12V
3
CAM_LED
OUT: open drain (3.3V to 12V)
4
CAM_LED
OUT: open drain (3.3V to 12V)
CAM_LED: open drain output to drive cathode of camera LED.
Controlled by 3 signals which are OR ‘red together:
J5 pin 5 (CSI CD camera)
J10 pin 5 (CSI AB camera)
Compute module GPIO_12: (socket pin 218) 0: LED off, 1: LED on, float: LED on
CAM_LED flash signal can be used to control external camera LED. When using external LED please
limit current with external resistor. Connect cathode to CAM_LED pin and anode to 3.3V to 12V
power. Maximum current: 2A.
5.13
J36 - Fan connector
Pico blade 1.5mm
Pin
Description
Socket pin
Note
1
GND
2
5V
Max. 1A
3
TACH
-
Not connected
4
PWM
230
Open drain output with 10k pullup to 5V
