Nokia 6220 Service Manual

RH-20

Company confidential

System Module and User Interface

CCS Technical Documentation

Page 14

  Nokia Corporation.

Issue 1  10/2003

AC and DC Characteristics of RF-Baseband Voltage Supplies

VFLASH2

Vcca

2.7V

2.78V

2.86V

I

max

 =10.5 mA

Vcc(vco)

2.7V

2.78V

2.86V

I

max

 =940 

µA

Vccd

2.7V

2.78V

2.86V

I

max

 = 3.9 mA

GenIO(3)

FMClk

1.4V
0

1.8V

1.88V
0.4V

High
Low

Reference clock for 
FM radio module

32kHz

Frequency

Also 6.5 MHz can be 
used

30ppm

Stability

GenIO(8)

FMWrEn

1.4V
0V

1.8V

1.88V
0.4V

High
Low

Write/Read enable

GenIO(12)

FMCtrlDa

1.4V
0

1.8V

1.88V
0.6V

High
Low

Bi-directional data

GenIO(11)

FMCtrlClk

1.4V
0

1.8V

1.88V
0.6V

High
Low

1 MHz

Frequency

FM Antenna

RFI1, RFI2

76 MHz

108 MHz

FM Input frequency

FM Radio L
FM Radio R

VAFL
VAFR

100mV

550mV

Audio level

24 dB

30 dB

Channel sep-
aration

54dB

60 dB

(S+N)/N

2%

Harmonic 
distortion

VBAT

Battery

PA, UEM

Voltage

2.95

3.6

4.2

V

Battery supply. Cut-off 
level of DCT4 regulators is 
3.04V. Losses in PWB 
tracks and ferrites are 
taken account to mini-
mum battery voltage 
level.