User Guide

CC Technical Documentation Troubleshooting - RF
NPM-10 (3595)
Issue 2 03/2004 ©2004 Nokia Corporation Confidential Page 7
As Table 2 indicates, the PLL must be able to cover the frequency range from 3296.8 MHz
to 3979.6 MHz.
Figure 3: Synthesizer block diagram
Key RF Component Placement
Refer to Table 3 and Figure 4 for key RF component locations.
Table 3: Key RF Components
Component Description
N600 Mjoelner RF IC
Z601 PCS Rx SAW
Z602 GSM Rx SAW
Z603 GSM Tx SAW
B600 26MHz crystal
G600 VCO (3.6GHz UHF VCO)
N700 Front End Module (FEM)
64/
65
NDIV
ADIV
ϕ
Charge
Pump
RDIV
1/2
1/4
CPOUT
1/2
1/4
PLL
loop
filter
26MH
z
RBEXT
VXO
RF_EN
RF_CLK
RF_DATA
RESETX_Mjoel
1/2
Buffer
VBEXT
LOCNT
REFCNT
Lock
Detect
2
XTALM
XTALP
REFOUT
REFOUT (26MHz)
VPLL
VDDCP
VDDPRE
VDDLO
VDDPLL
VDDXO
VREF1
VDDDL
VDDDIG
VDDBBB
VBB (1.8V)
Digital
Control
2,7k
Vcp
supply
filter
SENSE
RESETX
INPLO
INMLO
VVCO
VCO (G600)
Rpa
Ref.
filter
3
RFBUSX
RFBUSDA
RFBUSCLK
Synth
supply
filter
Ref clk set
VCXO
supply
filter
VR
5
VR
3
VR
7
RFCONV_0(9)
VIO
VCOSENSE
VR
2
Main Bias
Circuit
Resistor Ext/R2H/R2
VDDRXBB
Sensor
BIST / Temp.
VDDTX
I/O
level
shift
Buf/
AGC
VCXO Bias
R2H/
R2
VIO
SELADDR
AFC/CAL
Control
RESETX
3
GENIO6
VDDRXBB
222
2
2 22
To PCS
Modulator
To GSM
Modulator
To PCS RX
mixer
To GSM RX
mixer
Mjoelner
N600
VR1A
VCTRL