Nokia 9110 Service Manual
PAMS
Technical Documentation
RAE–2
BS8_RF
Page 3 – 32
Original 02/99
RF/BB/DSP Interface
The following three sections describe the hardware and timing interface
between RF and the BB/DSP section of the RAE–2.
between RF and the BB/DSP section of the RAE–2.
Interface Signal Characteristics
The interface signals between the BB and the RF section are shown in
the next table as a logical interface. On physical board level baseband
supplies voltages from CCONT to separate RF sub–blocks. The maxi-
mum values specified for the digital signals in the table are the absolute
maximum values from the RF interface point of view.
the next table as a logical interface. On physical board level baseband
supplies voltages from CCONT to separate RF sub–blocks. The maxi-
mum values specified for the digital signals in the table are the absolute
maximum values from the RF interface point of view.
Table 6. AC and DC Characteristics of RF/BB signals
Signal name
From - To
Function
VBATT
Battery RF
Supply voltage for RF
y
y
g
(PA on/PA off)
VXOENA
MAD CCONT
VR1, VR6 in CCONT ON
VR1, VR6 in CCONT
OFF
OFF
SYNPWR
MAD CCONT
VR3, VR4 in CCONT ON
VR3,VR4 in CCONT OFF
RXPWR
MAD CCONT
VR2, VR5 in CCONT ON
VR2, VR5 in CCONT OFF
TXPWR
MAD CCONT
VR7 in CCONT ON
VR7 in CCONT OFF
VREF
CCONT SUMMA
Reference voltage for
VREF
CCONT SUMMA
Reference voltage for
SUMMA and CRFU1a
SUMMA and CRFU1a
SUMMA and CRFU1a
PDATA0
MAD CRFU1A
Nominal gain in LNA
Reduced gain in LNA
SENA
MAD SUMMA
PLL enable
SDATA
MAD SUMMA
S
th
i
d t
SDATA
MAD SUMMA
Synthesizer data
SDATA
MAD SUMMA
Synthesizer data
SCLK
MAD SUMMA
S
th
i
l
k
SCLK
MAD SUMMA
Synthesizer clock
SCLK
MAD SUMMA
Synthesizer clock
AFC
COBBA VCTCXO
A t
ti f
t l i
l f
VC(TC)XO
AFC
COBBA VCTCXO
Automatic frequency control signal for VC(TC)XO
AFC
COBBA VCTCXO
Automatic frequency control signal for VC(TC)XO
10 10000Hz
10...10000Hz
RFC
VCTCXO MAD
Hi h t bilit
l
k i
l f
th l
i
i
it
RFC
VCTCXO MAD
High stability clock signal for the logic circuits
RFC
VCTCXO MAD
High stability clock signal for the logic circuits
RXIP/RXIN
SUMMA COBBA
Diff
ti l RX 13 MH
i
l t b
b
d
RXIP/RXIN
SUMMA COBBA
Differential RX 13 MHz signal to baseband
RXIP/RXIN
SUMMA COBBA
Differential RX 13 MHz signal to baseband
TXIP/TXIN
COBBA SUMMA
Diff
ti l i
h
TX b
b
d i
l f
th
TXIP/TXIN
COBBA SUMMA
Differential in–phase TX baseband signal for the
TXIP/TXIN
COBBA SUMMA
Differential in
hase TX baseband signal for the
RF modulator
RF modulator
TXQP/TXQN
COBBA SUMMA
Differential quadrature phase TX baseband signal
TXQP/TXQN
COBBA SUMMA
Differential quadrature phase TX baseband signal
q
g
for the RF modulator
for the RF modulator
TXP
MAD SUMMA
Transmitter power control enable
TXP
MAD SUMMA
Transmitter power control enable