User Manual

DR1198 JN5168 USB Dongle

Reference Manual

JN-RM-2065 v1.0 © NXP Laboratories UK 2012 7

2.5 LEDs

There are two surface-mounted LEDs that can be controlled by the JN5148

wireless microcontroller (see Figure 2 for locations):

 LED D1 which is green

 LED D2 which is orange

Both LEDs are connected to DIO16 and DIO17. These DIOs can be used to

control the LEDs as indicated in the table below.

DIO 17

Low

High

DIO16

Low

D1: Off

D2: Off

D2: On

High

D1: On

D1: Off

D2: Off

2.6 32-kHz Crystal Oscillator

The JN5168 has an internal 32-kHz RC oscillator. In order to provide more

accurate system timings, an external 32-kHz crystal can be used with the device.

This is provided on the USB dongle and can be enabled using the JN516x

Integrated Peripherals API - refer to JN516x Integrated Peripherals API User

Guide (JN-UG-3087).