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Only for training and service purposes
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4.13 Checking VCTCXO Block
The reference frequency (19.2MHz) from X1000 (VCXO) is used UMTS TX part, GSM part and BB
part.
TCXO
0.01u
C1066
100p
C1071
C1064
0.1uF
C1072
1000p
R1019
100ohm
2
GND
NC1
5
6
NC2
NC3
7
8
NC4
3
OUTPUT
4
VCC
VCONT
1
DSA321SCE-19.2M X1000
1000p
C1065
TRK_LO_ADJ
VREG_TCXO_2.85V
TCXO_PM
TCXO_RTR
[Fig.] Schematic of the TCXO Block
TP1
TP2
TP4
TP3
[Fig.] Test Point of the TCXO Block
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