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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.2 Checking TCXO Block
The reference frequency (19.2MHz) from X100 (TCXO) is used in UMTS TX
part, and BB part.
TP2
TP1
TP3
TCXO
100ohm
R703
1000p
C704
0.1u
C703
C706
100p
0.01u
C705
VCONT
1
19.2MHz
X700
2
GND
OUT
3
VCC
4
TRK_LO_ADJ
VREG_TCXO_2.85V
TCXO_PM
TCXO_RF
TP1 : C703
TP2 : R703
TP3 : C706
Z3X-BOX.COM
Содержание L705ix
Страница 185: ...Note Z 3 X B O X C O M ...
Страница 186: ...Note Z 3 X B O X C O M ...