Regulators - Nokia RH-53 Manual

Nokia Customer Care
A BSI resistor inside the battery pack indicates the battery type/size. The resistor value corre-
sponds to a specific battery capacity and technology.
The battery voltage, temperature, size and current are measured by the UEM, and controlled
by the charging software running in the UPP.
The charging control circuitry (CHACON) inside the UEM controls the charging current deliv-
ered from the charger to the battery. The battery voltage rise is limited by turning the UEM
switch off when the battery voltage has reached VBATLim (programmable charging cut-off lim-
its 3.6V / 5.0V / 5.25V). Charge current is monitored by measuring the voltage drop across a
0.22 ohm resistor.
■

Regulators

Overview of the regulator state in 'Active', 'Acting dead' and 'Sleep' mode is shown in table 1.
Regulator
VFLASH1 Enabled
VFLASH2 Disabled (Not used)
VANA Enabled
VIO Enabled
VCORE Enabled
VSIM Enabled (voltage control-
led by software)
VR1A Enabled
VR1B Disabled (Not used)
VR2 Enabled (voltage control-
led by software)
VR3 Enabled
VR4 Disabled
VR5 Enabled
VR6 Enabled
VR7 Enabled
Regulator
IPA1-2 Disabled (not used)
14
Table 1: Overview
Active
Enabled
Disabled (Not used)
Enabled
Enabled
Enabled
Disabled
Enabled
Disabled (Not used)
Enabled (voltage control-
led by software)
Disabled
Disabled
Disabled
Disabled
Disabled
Active
Disabled (not used)
COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
Acting dead
Acting dead
RH-53/54
8-System Module
Sleep
Sleep mode
Disabled (Not used)
Disabled
Sleep mode
Sleep mode
Enabled/Sleep mode
(depending on SIM
card)
Disabled
Disabled (Not used)
Enabled (voltage con-
trolled by software)
Disabled
Disabled
Disabled
Disabled
Disabled
Sleep
Disabled (not used)
ISSUE 1 09/2004