Nokia NSB-9 Service Manual page 29

CCS Technical Documentation
VrefRF0 UEM VREF_RX
1
VrefRF0 UEM VB_EXT
2
Table 8: AC and DC Characteristics of RF-Baseband Digital Signals
Signal name From
TXP
UPP
(RFGenOut3)
RFBusEna1X UPP
RFBusData UPP
Issue 1 04/03
Voltage
Current
Voltage
Current
To Parameter
PA &
"1"
HAGAR
"0"
Load Resistance
Load
Capacitance
Timing Accuracy
HAGAR "1"
"0"
Current
Load resistance
Load capacitance
HAGAR "1"
"0"
Load resistance
Load capacitance
Nokia Corporation
System Module and User Interface
1.33 1.35 1.36 V
4 6
100 uA
1.32 1.35 1.37 V
3 7
100 uA
Input Characteristics
Min Typ Max
1.3
1.88
8
0 0.4
10 220
20
1/4
1.3
1.88
8
0 0.4
50
10 220
20
1.38 1.88
0 0.4
10 220
20
NSB-9
Voltage Reference for
RF-IC.
Note:Below 600Hz
noise density is
allowed to increase 20
dB/oct
Supply for RF-BB dig-
ital interface and
some digital parts of
RF.
Function
Unit
Transmitter
power amplifier
V
enable / DCN2
timing???
V
kohm
pF
symb
ol
V RFbus enable
V
uA
kohm
pF
V RFbus data;
read/write
V
kohm
pF
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