User Guide

CC Technical Documentation Troubleshooting - Baseband
RM-11
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 13
CBUSClk Interface
A 1.2 MHz clock signal is used for CBUS, which is used by the MCU to transfer data
between the UEM and UPP.
Figure 6: 1.2 MHz CBUS clock signal
DBUS Clk Interface
A 9.6 MHz clock signal is used for DBUS, which is used by the DSP to transfer data
between the UEM and the UPP.
Figure 7: 9.6 MHz clock signal