User Guide

NPM-6/6X
System Module and User Interface CCS Technical Documentation
Page 16 Nokia Corporation. Issue 2 06/03
Analogue Signals
RESET UPP
GenIO 6
the
Helga
”1” 1.38 1.85 V Reset to the
Helga
”0” 0 0.4 V
Load capacitance 20 pF
Load resistance 10 220 kohm
Signal
name
From To Parameter Min Typ Max Unit Function
VCTCXO VCTCXO UPP Frequency 13 26 MHz High stability
clock signal for
the logic circuits,
AC coupled. Dis-
torted sinewave
eg. sawtooth.
Signal amplitude 0.2 1.32 Vpp
Input resistance 10 kohm
Input capaci-
tance
10 pF
Harmonic con-
tent
-8 dBc
Clear signal win-
dow (no glitch)
200 mVpp
Duty cycle 40 60 %
VCTCXOGnd VCTCXO UPP DC level 0 V Ground for refer-
ence clock
RXI/RXQ Helga UEM Voltage swing
(static)
1.35 1.4 1.45 Vpp Received demodu-
lated I- and Q-
signals
DC level 1.3 1.35 1.4 V
Input impedance 500 kohm
TXIP / TXIN UEM the
Helga
Differential volt-
age swing (static)
2.15 2.2 2.25 Vpp Programmable
voltage swing.
Programmable
common mode
voltage.
Between TXIP-
TXIN
DC level 1.17 1.20 1.23 V
Source imped-
ance
200 ohm