Nokia NPD-1 Series, Troubleshooting - Rf

Page: 56 / 62

NPD-1
Troubleshooting — RF CCS Technical Documentation
Page 56

Nokia Corporation Confidential Issue 1 11/2002
Figure 16: Detailed Robin Block Diagram
UHF LO-inputs
P
A
CT
RL
_
R
B
TX
_
G
A
T
E
TX
_
R
F_
A
G
C
P
A
CT
RL
_
ICE
L
PA
C
T
R
L
_
IPC
S
PC
S
dr
iv
e
r out
put
FI
L
S
E
L
1
R
B
IA
S
dr
iv
er
VHF charge-pump out
VHF VCO tank
EXT VCO input
1
9.
2 M
H
z
r
e
fe
renc
e
os
c
il
lat
or
i
nput
R
B
IA
S PL
L
Q-
input
I-
input
Re
s
e
t
RF_BUS_CLK
RF_BUS_DATA
RF_BUS_EN1X
TX
_
P
A
_
A
G
C
1.35V reference voltage
RBIAS SSB MIXER
TX_IF_AGC_REF
MU
X
2:
gai
n
c
ont
ro
l
gai
n
c
ont
ro
l
90
o
90
o
c
har
ge
pum
p
phas
e
det
ec
to
r
loop
di
v
ider
ref
e
renc
e
di
v
ider
VH
F
VC
O
RE GIST ER 5
RE GIST ER 4
RE GIST ER 3
RE GIST ER 2
RE GIST ER 1
RE GIST ER 0
SI
O
in
te
rf
a
c
e
BI
AS
IN
G
BI
AS
CO NTRO L
TE
S
T
MU
X
90
o
90
o
TEST1
TEST2
FI
L
S
E
L
2
PC
SC
T
R
L
DE
A
F
_
CH_
E
N
c
e
llul
ar
dr
iv
e
r out
put
PW
R
O
U
T
PW
R
1
PW
R
2
VCO BAND SWITCH
di
gi
ta
l t
e
s
t out
pu
t
PLL_TESTP
PLL_TESTN
TX_IF_AGC
D
UP
L
E
X
_
B
A
N
D
PD
_
C
EL
L
PD
_
P
C
S