User Guide

CCS Technical Documentation 7 - System Module & UI
Company Confidential NMM-3
Issue 1 (11/2003) Copyright  2003 Nokia Corporation Page 7-11
Company Confidential
All baseband regulators are switched on at the UEME power on except SIM and VAUX1,
2, 3 regulators that are controlled by the MCU (VFLASH2 is not used on NMM-3). The
UEME internal watchdogs are running during the UEME reset state, with the longest
watchdog time selected. If the watchdog expires the UEME returns to power off state.
The UEME watchdogs are internally acknowledged at the rising edge of the PURX signal
in order to always give the same watchdog response time to the MCU.
UEME Reset Sequence and Timings
The diagram below shows the timing of the reset sequence on the NMM-3.
A/D Channels
The UEME contains the following A/D converter channels that are used for several mea-
surement purpose. The general slow A/D converter is a 10-bit converter using the UEME
interface clock for the conversion. An interrupt will be given at the end of the measure-
ment.
The UEME’s 13–channel analog to digital converter is used to monitor charging func-
tions, battery functions, voltage levels in external accessory detection inputs, user inter-
face and RF functions.
POWERONX
U
EMRSTX
VRAM (SDRAM core)
VTIKU (Tiku core)
VFLASH1
VIO, VR3, VANA,
SMPSCLK
PURX, SLEEPX
Delay1
20ms
Delay2
200ms
Delay3
0.5ms
Delay4
20ms
1.3V
1.5V
RFCLK
(19.2MHz)