LG KG800 - 13 Mhz Clock; Switchplexer for Triband

3. TECHNICAL BRIEF
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3.2 13 MHz Clock (VCTCXO, X400)
The 13 MHz clock(X400) consists of a TCXO(Temperature Compensated Crystal Oscillator) which
oscillates at a frequency of 13 MHz. It is used within the SKY74400, analog base band chipset (U100,
AD6535), digital base band chipset (U101, AD6527B).
3.3 Switchplexer for Triband(FL400)
13MHz
2V75_VVCXO
R404
100
1000p
C407
2
GND
3
OUT
4
VCC
1
VCONT
13MHz
X400
C408
1u
C405
1000p
10K
R403
AFC
Figure 3-3 VCTCXO CIRCUIT DIAGRAM
Vc1 Vc2 Vc3 Current
EGSM-Tx 0.0-0.1V 0.0-0.1V 2.3-3.0V 10mA Max
EGSM-Rx 0.0-0.1V 0.0-0.1V 0.0-0.1V ≈ 0mA
DCS/PCS-Tx 0.0-0.1V 2.3-3.0V 0.0-0.1V 10mA Max
DCS-Rx 0.0-0.1V 0.0-0.1V 0.0-0.1V ≈ 0mA
PCS-Rx 2.3-3.0V 0.0-0.1V 0.0-0.1V 10mA Max
Table 3-1 FEM CONTROL LOGIC