User Guide

RH-48
System Module CCS Technical Documentation
Page 14 ©2003 Nokia Corporation Confidential Issue 1 11/2003
2-wire differential mic input
• Power out
2.78V 70 mA output to accessories
• Detection/controlling
ACI
Point to point bi-directional data line
• Fbus
Standard Fbus
AT command mode (Nokia Serial Bus)
Phonet message mode
Fast Fbus, fast data bus to add on modules
Figure 3: Tomahawk system connector