Nokia 3105 Servicehandbuch

CCS Technical Documentation

Troubleshooting — BB

RH-48

Issue 1 11/2003

© 2003 Nokia Corporation         Confidential 

Page 27

FBus communication in Tomahawk is done through the following lines:
Pin 2 (Charge GND)
Pin 3 (ACI)
Pin 4 (Vout)
Pin 6 (FBus Rx)
Pin 7 (FBus Tx)

A waveform for such communication is illustrated here:

USB and Audio on (mono or stereo) and FM radio communication in Tomahawk is done 
through the following signals:

Pin 5 (USB Vbus)

Pin 9 (XMic N)

Pin 6 (USB +)

Pin 10 (SMIC P)

Pin 7 (USB -)

Pin 11 (HSEAR N)

Pin 8 (Data GND)

Pin 12 (HSEAR P)

Pin 13 (HSEAR R N)

Pin 14 (HSEAR R P)