The Led Interface; Led Connector J5 - LSI LSI8751SP User Manual

A.2.3 The LED Interface
The LED interface on the LSI8751SP is a four-wire arrangement that
allows the user to connect an LED harness to the board. The
GPIO0_FETCH line (maximum output low voltage 0.4 V and minimum
output low current 16 mA) is pulled low to complete the circuit when a
harness with an LED is attached. The connector on the LSI8751SP is J5.
Table A.6

LED Connector J5

Signal Name
LED+
LED −
LED −
LED+
Operational Environment
Pin
1
2
3
4
A-9