User Guide

6255/6255i6256/6256i (RM-19)
Baseband Description and Troubleshooting Nokia Customer Care
Page 38 ©2005 Nokia Corporation Company Confidential Issue 2 05/2005
Figure 25: Waveform showing Pop-port FBus communication
Accessory Detection Through ACI
USB and Audio on (mono or stereo)/FM radio communication in Pop-port is done
through the following signals:
Table 12: Accessory Detection Signals
USB Audio/FM
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)