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Technical Documentation
RAE-5 
3. RF+System Module KL8 
Page 3 – 21
Issue 1 04/02
Table 9. UI Connector    (continued)  
Function
Unit
Maximum
Nomi-
nal
Minimum
Parameter
From/To
Signal Name
 Type
Pin
47
EARN
O
COBBA_GJP
Maximum Output swing
Vpp
2.36
2.5
V
(signal details
NO TAG)
EARP/N Offset
–50
50
mV
Load resistance
32
W
43,
44
SPKP
O
Audio Amp
Output level
1.8
Vrms
HF Speaker
45,
46
SPKN
O
Audio Amp
Output level
1.8
Vrms
(signal details
NO TAG)
Load resistance
8
W
System – RF interface
Table 10.  AC and DC Characteristics of signals between RF and System blocks     
Signal name
From
To
Parameter
Mini-
mum
Typi-
cal
Maxi-
mum
Unit
Function
VBATT
Main
 battery
PA
Voltage
3.0
3.6
4.8
V
PA supply voltage
VREF
CCONT
(VREF)
RF 
 (HAGAR)
Voltage
1.478
1.5
1.523
V
Reference voltage
for RF
VXO
CCONT
(VR1)
VCTCXO
Voltage
2.7
2.8
2.85
V
Supply voltage for
VCTCXO
VSYN_1
CCONT
(VR4)
Vdd_bb,
LNAs
Voltage
2.7
2.8
2.85
V
Supply voltage for LNAs
and Vdd_bb
VSYN_2
CCONT
(VR3)
HAGAR,
VCO
Voltage
2.7
2.8
2.85
V
Supply voltage for divid-
ers, LO buffers, prescal-
ers and VCO
VCP
CCONT
(5V5)
Charge pump
regulator
Voltage
4.8
5.0
5.2
V
Supply voltage for PLL
charge pump regulator
VRX
CCONT
(VR2)
HAGAR
Voltage
2.7
2.8
2.85
V
Supply voltage for LNA2
+ mixer + DTOS
VTX
CCONT
(VR5,VR7)
HAGAR
Voltage
2.7
2.8
2.85
V
Supply voltage for TX
modulator
HA-
GARRSTX
MADLinda
HAGAR
Output high
”1”
0.8*VBB
VBB
V
HAGAR reset, active
LOW
Output low
”0”
0
0.22*VBB
V
Output Cur-
rent
2
mA
SENA1
MADLinda
HAGAR
Output high
”1”
0.8*VBB
VBB
V
HAGAR synthesizer in-
terface enable
Output low
”0”
0
0.22*VBB
V
Output Cur-
rent
2
mA
SDATA
MADLinda
HAGAR
 high ”1”
0.8*VBB
VBB
V
HAGAR synthesizer in-
terface control data
 low  ”0”
0
0.22*VBB
V
terface control data
Output Cur-
rent
2
mA
Data rate
3.25
Mbit/s