User Guide

NSW-4
Disassembly & Troubleshooting
PAMS Technical Documentation
Page 21
Issue 1 Final Draft
08/00
 Nokia Mobile Phones Ltd.
FunctionUnitMaxTypMinParameterToFromSignal
name
Logic low ”0” 0 0.8 V
RFC EROTUS COB-
BA_D
Voltage/Fre-
quency
0.2 0.4 /
19.44
1.0 Vpp /
MHz
Clock signal for
the logic circuits
RFCEN MAD CCONT /
PENTA
regulator
Voltage 0 2.85 V “1” min 2.0 V
“0” max 0.4 V
RSSI EROTUS CCONT/
COB-
BA_D
Output level 0.1 1.5 V Analog mode
field strength in-
dicator
TXIP/
TXIN
COBBA EROTUS Differential
voltage swing
(static)
1.022 1.1 1.18 Vpp Differential in–
phase TX base-
band signal for
the RF modula-
tor
Single ended
output level
0.760 0.8 0.84 V
TXQP/
TXQN
COBBA EROTUS Same as
TXIP/TXIN
Differential quad-
rature phase TX
baseband signal
for the RF modu-
lator
TXP1 MAD CCont Logic high ”1” 2.0 V 1 Ghz Transmit-
ter enable
Logic low ”0” 0.5 V VR7 ON/OFF
TXC COBBA EROTUS Number of
bits
10 bits Transmitter pow-
er control (ramps
& power levels)
Output volt-
age swing
2.09 2.15 2.21 V
Minimum
code output
level
0.12 0.15 0.18 V
Maximum
code output
level
2.27 2.3 2.33 V
TXF EROTUS MAD Voltage 0 2.85 V False transmis-
sion indicator,
function con-
trolled via ERO-
TUS register
TXP2 MAD PENTA
regulator
Logic high ”1” 2.0 V 2 Ghz Transmit-
ter enable
Logic low ”0” 0.5 V VR11 ON/OFF
TXA MAD EROTUS Logic high ”1” 2.5 V PWR control
loop during TX
burst (slow
mode)