User Guide

CCS Technical Documentation System Module and User Interface
NPM-6/6X
Issue 2 06/03 Nokia Corporation. Page 15
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
covers a connector or a defined interface.
Digital Signals
AC and DC Characteristics of RF-BB digital signals
Signal name From To Parameter Input Characteristics
Function
Min. Typ Max Unit
TXP UPP
GenIO 5
Helga ”1” 1.38 1.88 V Power ampli-
fier enable
”0” 0 0.4 V
Load Resistance 10 220 kohm
Load Capacitance 20 pF
Timing Accuracy 1/4 sym-
bol
RFBusEna1X UPP Helga ”1” 1.38 1.88 V RFbus enable
”0” 0 0.4 V
Current 50 uA
Load resistance 10 220 kohm
Load capacitance 20 pF
RFBusData UPP the
Helga
”1” 1.38 1.88 V RFbus data;
read/write
”0” 0 0.4 V
Load resistance 10 220 kohm
Load capacitance 20 pF
Data frequency 10 MHz
RFBusClk UPP the
Helga
”1” 1.38 1.88 V RFbus clock
”0” 0 0.4 V
Load resistance 10 220 kohm
Load capacitance 20 pF
Data frequency 10 MHz