Sleepclk (Digital); Sleepclk (Analog) - Nokia RH-66 Troubleshooting Manual

2115i/2116/2116i (RH-66)
Baseband Description and Troubleshooting

SleepCLK (Digital)

The 32 kHz sleep clock in the UEMC is also used in the UPP for sleep mode timing.

SleepCLK (Analog)

When the system enters sleep mode or power off mode, the external 32 KHz crystal
provides a reference to the UEMC RTC circuit to turn on the mobile terminal during
power-off or sleep mode.
Figure 9: 32 kHz analog waveform at the 32 KHz crystal input
Page 16
Figure 8: 32 kHz Digital output from UEMC
©2005 Nokia Corporation
Company Confidential Issue 1 03/2005