User Guide

NEM-2
System Module and User Interface CCS Technical Documentation
Page 18 Copyright Nokia. All rights reserved. Issue 1 07/03
Baseband External and Internal Signals and Connections
This section describes the external and internal electrical connection and interface levels
on the baseband. The electrical interface specifications are collected into tables that
cover a connector or a defined interface.
Figure 2: RF/BB connections block diagram
Table 1: AC and DC Characteristics of DCT4 RF-Baseband Voltage Supplies
Signal
name
From To Parameter Min Typ Max Unit Function
VBAT Battery PA & UEM Voltage 2.95 3.6 4.2 V Battery supply. Cut-
off level of DCT4 reg-
ulators is 3.04V.
Losses in PWB tracks
and ferrites are taken
account to minimum
battery voltage level.
Current 2000 mA
Current drawn by
PA when ”off”
0.8 2 uA
UEM
UPP
Helgo
AFCOUT
AUXOUT
RXIINP
RXQINP
TXIOUTP
TXIOUTN
TXQOUTP
TXQOUTN
GENIO5
GENIO6
GENIO7
GENIO9
RFBUSCLK
RFBUSDA
RFBUSEN1X
RFCLK
VrefRF01
PATEMP
TXC
OUT_BB1_I
OUT_BB1_Q
TXI_0
TXI_180
TXQ_180
TXQ_0
VB_EXT
RFTEMP
VC
TXP
RESET
SCLK
SDATA
SLE
TXA
MODE
REFOUT
VBAT
IPA1
IPA2
VR1A
VR2
VR3
VR4
VR5
VR6
VR7
RF
BB
VBAT
IPA1
IPA2
VR1A
VR2
VR7
VR4
VR5
VR6
Iref_850
Iref_1800_1900
PA
VCP
VRF_TX
VRF_RX
VLO
VBB
VCTCXO VCO
VR3
VPRE
VF_RX
VPAB
VLNA
MODOUTP_G_TX
MODOUTM_G_TX
MODOUTM_P_TX
MODOUTP_P_TX