User Guide

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)

System Module Nokia Customer Care

Reference voltages for regulators require external 1uF capacitors. Vref25RF is reference

voltage for VR2 regulator; Vref25BB is reference voltage for VANA, VFLASH1, VFLASH2,

VR1 regulators; Vref278 is reference voltage for VR3, VR4, VR5, VR6, VR7 regulators;

VrefRF01 is reference voltage for VIO, VCORE, VSIM regulators, and for RF.

The baseband is powered from five different UEM regulators:

Table 2 includes the UEM voltage regulators used by the RF.

Table 1: Baseband Regulators

Regulator

Maximum

Current (mA)

Vout (V) Notes

VCORE

DC/DC

300 1.35 The power-up default value is 1.35V. The output voltage is

selectable: 1.0V/1.3V/1.5V/1.8V.

VIO 150 1.8 Enabled always except during power-off mode

VFLASH1 70 2.78 Enabled always except during power-off mode

VFLASH2 40 2.78 Enabled only when data cable is connected

VANA 80 2.78 Enabled only when the system is awake (off during sleep

and power-off modes)

VSIM 25 3.0 Enabled during power-up mode and scanning for a SIM

card

Table 2: RF Regulators

Regulator

Maximum

Current (mA)

Vout (V) Notes

VR1A 10 4.75 Enabled when the receiver is on

VR1B 10 4.75 Enabled when the transmitter is on

VR2 100 2.78 Enabled when the transmitter is on

VR3 20 2.78 Enabled when SleepX is high

VR4 50 2.78 Enabled when the receiver is on

VR5 50 2.78 Enabled when the receiver is on

VR6 50 2.78 Enabled when the transmitter is on

VR7 45 2.78 Enabled when the receiver is on

Table 3: Regulator Descriptions

Regulator Description

VANA Supplies internal and external analog circuitry of the BB. This regulator is disabled in sleep mode.

Vflash1 Supplies the LCD and the digital parts of the UEM ASIC. This regulator is enabled during startup

and enters low Iq-mode in sleep mode.